An afternoon of comedy and music awaits for you at the Reagle Music Theatre. Lucie Arnaz, daughter to Lucille Ball and Desi Arnaz, will be performing and proving that she inherited the talent of both her parents. I have two pairs of tickets to give away! Email johnny@eventsinsider.com. 3pm. Reagle Music Theatre Waltham, MA, Sun 4/21.more

Molecules mingle and mangle in a dance of chemistry that now you can join! In this simulation, you get to be a part of a DNA Strand. Let’s get everyone’s attention 12pm. Koch Institute at MIT Cambridge, MA, Mon 4/8–Thu 4/18.more

Did you know that there’s an afterparty to the Boston Marathon? And if you get there early you can see the wheelchair racers zip past? I’m not into watching sports myself (I hate sitting idle) but it’s actually really fun rooting on the joggers. It starts in Hopkinton and goes through Wellesley into Boston. Or better yet, check out one of the many historical re-enactments and other events for Patriot’s Day! Copley Square Boston, MA, Fri 4/12–Tue 4/16.more

The largest science fest in the US continues and it’s free! Keep reading for my favorite of the dozens of events, or just click through to their website schedule. Various venues Cambridge, MA, Fri 4/12–Sun 4/21.more

They fire cannons, they fire muskets, they fire blacksmith ovens, and they sew. That’s right! It’s the men of the marines plus their ‘matrons’, whatever that means. It’s freeeeeeeee and they have multiple dates this summer. 9am-3pm. Boston National Historical Park Boston, MA, Sat 4/13–Sun 4/21.more

Science is a blast! And if you are passionate about it, come to this Scientific Celebration! Just don’t have too much fun! All Around Cambridge, MA, Sat 4/13–Sun 4/21.more

Create your own deadly robot (just kidding!) and have it fight 7 other death machines in front of a roaring crowd 5:00pm. Artisans Asylum Somerville, MA, Sun 4/14–Sun 4/21.more

Poetry and Science have a lot in common. They do! Ask Pascal if you don’t believe me. But since he’s dead, maybe we could talk to Nick Montfort at this event! 6pm. Main Library, 449 Broadway, Lecture Hall Cambridge, MA, Tue 4/16.more

There are still no time machines to take us back in time, but going to the places that marked people’s lives is a good way of understanding what made them how they are. This is a walk through the Kennedy’s neighborhood in Brookline. And of course the guide will tell us all about the pranks young JFK pulled on his parents! JFK Birthplace Brookline, MA, Tue 4/16–Thu 4/18.more

Embrace your inner geekness while having a good laugh of it! Every single aspect of the Geek culture will be included so you don’t miss out on any joke! Central Square Cambridge, MA, Tue 4/16–Sun 4/21.more

Do you dream about baseball? Live the dream in this FREE Fenway Park open house where you can explore behind the scenes areas and meet Red Sox alumni. 9am-5pm. Fenway Park Boston, MA, Wed 4/17.more

How cool! A guided tour through MIT’s Nuclear Reactor Laboratory. You’d think it’s hard to get in, but all it takes is ringing the bell at the door and say you’re there for the tour. 6pm. MIT Nuclear Reactor Laboratory Cambridge, MA, Thu 4/18.more

I love this so much! Remember that chase at the start of Casino Royale where they bounce around obstacles? NOW YOU CAN LEARN TO DO IT. (Or if you’re like me, just show up and watch.) Kids in the day, adults in the evening. 9am-7pm. Somerville Armory Somerville, MA, Fri 4/19.more

How’d you like get cast in a reality show where live roleplaying is the theme? Show up to this casting call on Friday or email jlegrandecasting@gmail.com to get invited to private casting in Boston over the weekend. Bocelli’s Restaurant Medford, MA, Fri 4/19.more

Become a temporary ‘sailor scientist’ while on the Hands-On Family Harbor Cruise. Plenty of oceanography and environmental experiments will be available. The Boston’s Best Cruises Ferry Center Boston, MA, Sat 4/20.more

Can you imagine ‘The Amazing Race’ but with 300 teams craving for victory at the same time? That’s pretty much what this is. Discover the city in a whole different way and enjoy yourself while racing against grandma’s team!. 12pm. Battery Park Bar & Lounge Boston, MA, Sat 4/20.more

PILLOW FIGHT! This is the first time the people from Cambridge Universities organize this, but I suspect it won’t be the last. Pillows will be provided by the organizers, but you have to bring your own PJs. 4:20pm. Cambridge Common Cambridge, MA, Sat 4/20.more

This is an awesome free event! Science geniuses have 8 innovative new technologies! 6pm. StartupLab Allston Boston, MA, Tue 4/23.more

Chemists celebrate Earth Day creating new elements. Well, not really. But they do have a small event where you can try and use new green technologies that, hopefully, you can later adopt. Museum of Science Boston, MA, Sun 4/21.more

Once I saw a gorilla at the Franklin Park Zoo eat his own poop! And for Earth Day they’ll have a bunch of speakers and animal keepers do interactive stuff, mainly feed the animals, I guess. 10am-3pm. Franklin Park Zoo Boston, MA, Sun 4/21.more

Professors from Suffolk University will be discussing topics related to the creation of a clean energy economy. 12:30pm. Suffolk University Law School,120 Tremont St Boston, MA, Mon 4/22.more

If you are a great cinema lover, come celebrate the 7th art! Loews Theatre Boston Common Boston, MA, Fri 4/12–Sun 4/21.more

Braze yourselves to relieve one of the most exhiting battles against the Britts! 9am. USS Constitution Museum, Pier 1 Charlestown, MA, Sat 4/13–Sun 4/21.more

The Public Garden has a pond, and the pond has swans. Yes, the Swan Boats, but also real swans named Romeo and Juliet. It’s certainly the best time of the year to visit the Garden. The pond is filled back up, the ducks are back, and the trees are in blossom. Hello, Spring! Public Garden Boston, MA, Sat 4/13–Wed 5/1.more

Come and meet a great variety of carnivores that live at this zoo! Come on, there will be nothing greater for kids on this week! 10:30 am. Boston, MA, Mon 4/15–Fri 4/19.more

How did people live in the days before the Revolution in Boston? Come and have a look! Old State House Boston, MA, Mon 4/15–Fri 4/19.more

A sustainable future is an important thing to worry about, here and in Afghanistan. So come hear how it can be achieved! 7pm. Brookline Booksmith279 Harvard St. Brookline, MA, Tue 4/16.more

Come have a family day at the museum! Explore knowledge altogether! 10 am. Peabody Museum of Archaeology and Ethnology, Harvard University Cambridge, MA, Tue 4/16.more

Let’s empower and create more awareness, sexual assault victims unite and speak out. Join your voice with theirs. Simmons College Residence Campus Boston, MA, Tue 4/16.more

An interactive workshop thought for everyone with a fascination for Japanese arts. Museum of Fine Arts, Boston, Avenue of the Arts Boston, MA, Tue 4/16–Fri 4/19.more

This is MIT’s celebration of their very own (and very cool) public art collection. The coolest part is you get to create your own sculpture in the Henry Moore fashion. 11-4pm. Weisner Bldg E15 Cambridge, MA, Tue 4/16–Fri 4/19.more

I love a good old dramatized reading of an epic poem, as long as the author makes it fun, has good reading and does a lot of sounds and expressions. And if you do too, this will be a blast! Oberon Cambridge, MA, Tue 4/16–Sun 5/5.more

This will be a great walk about our favorite midnight riders of all time! 2pm. The Paul Revere House Boston, MA, Tue 4/16–Thu 4/18.more

Are you afraid of cats that are black? What if they glow in the dark? Mingle and eat dinner at this social mixer and book talk about scary biotech. No cat will be served. 6pm. Zuzu Cambridge, MA, Wed 4/17.more

They’re giving out free books? They’re giving out free books! Join the party where book lovers discover new titles, great authors and make new friends. 7pm. Harvard Book Store Cambridge, MA, Wed 4/17.more

Let Nathaniel Rich introduce you to the world he has created in his new book, called Odds Against Tomorrow. With a bit of luck, you might get your copy signed by the renowned author. Harvard Book Store Cambridge, MA, Thu 4/18.more

Indoor kite flying? That’s only possible on National Astronomy Day. The Clay Center will hold telescope clinics, science demos and much more. No pets allowed. 4pm. Clay Center for Science & Technology Brookline, MA, Thu 4/18.more

Spending time with the commander of the U.S.S. Constitution? Now that’s cool! Learn more about old ironsides from an actual expert. 6pm. National Archives 380 Trapelo Rd Waltham, MA, Thu 4/18.more

Niels Bohr said, ‘Prediction is hard — especially about the future.’ This lecture on modeling big systems like economics and biology is followed by a social mixer. Sounds like a ‘model’ evening, and it’s free! 6pm. Peabody Museum of Archaeology & Ethnology Cambridge, MA, Thu 4/18.more

No one likes the IRS, but some people back in the 18th century -really- hated taxes, so much that they dumped a shipful of tea into the Boston Harbor. Hear the details and effects of this act of rebellion in this book talk. 12pm. Boston Tea Party Museum, Congress St Boston, MA, Fri 4/19.more

It’s a celebration of Basketball and Art, two of the most beloved things in Boston. The event features an art expo, music, sports and much more. Voltage Coffee & Art, 295 3rd Street, Kendall Square Cambridge, MA, Fri 4/19.more

FLEXWIDIT is a costume, art and music festival that has one main rule: Be yourself. Enjoy 2 days of musical performances by underground bands and DJs. Boston, MA, Fri 4/19–Sat 4/20.more

Everyone is short in these films. No wait, the films are short! And European! This FREE festival at MIT doesn’t seem to have filmmaker Q&As, but there will be mingling and live voting. MIT Campus Cambridge, MA, Fri 4/19–Sun 4/21.more

Enjoy a night of dancing, powered by the sexy and enchanting brazilian beats. YOu’ll get a chance to learn how to dance Samba, Soul, Bossa Nova Grooves and Tropicalia Rhythms. 8pm. Cambridge, MA, Sat 4/20.more

This event features a musical interpretation of The Lorax by The New England Dance Ensemble. Zookeepers will be meeting with visitors on scheduled encounters. Music, games and prizes from MAGIC 106.7. Stone Zoo Stoneham, MA, Sat 4/20.more

Did you know Ginkgo biloba is considered a living fossil? Learn much more from Ginkgo world experts and taste Ginkgo nut based dishes. 10am. Weld Hill Research Building Roslindale, MA, Sat 4/20.more

Would you like to know more about the scientist who helped Darwing discover the Theory of Evolution? This is your chance! A night dedicated to Alfred Russel Wallace. 9pm. Harvard Museum of Natural History Cambridge, MA, Sat 4/20.more

3 of Buster Keaton’s best short films get refreshed by Brendan Cooney’s original scores, performed by an awesome trio of musicians. 7pm. The Brattle Theatre Cambridge, MA, Sun 4/21.more

Unfortunately, we cannot undo the Armenian Genocide. But we can reflect on it and pay our respects to the people who died as victims. Raising awareness is the best way to prevent this from happening again. 2pm. Armenian Library and Museum of America Watertown, MA, Sun 4/21.more

This nature tour goes to some mill town ruins. The nice thing about the Middlesex Fells is it’s a good place to go hiking that you can get to on public transit. 7:30-9pm. Bellevue Pond lot (Gate 5), South Border Rd Medford, MA, Sun 4/21.more

It’s Shakespeare’s 449th birthday. Docent Susan Zawalich will be guiding a walk to visit famous Shakespearian actor’s graveplaces. The walk will also include short readings of selected Shakepeare’s works. 1pm. Mount Auburn Cemetery Cambridge, MA, Sun 4/21.more

Ever dreamed of spending New Year’s Eve 1899 in Egypt? Sounds exciting, doesn’t it? Come speak to the man who thought about a similar story! 2013:7pm. Jane Pickens Theatre Cambridge, MA, Mon 4/22.more

Until now, nature has been able to provide us all with what we need. It is time to give something back, specially when we’re about to reach 9 bill people. Experts will discuss about the greatest conservation challeneges of our time. 5:30 pm. Artists for Humanity EpiCenter Boston, MA, Mon 4/22.more

Dinosaurs are extint but they’re still teaching us about how life was like millions of years ago. Brian Switek presents his new book, which reveals new discoveries about the old giants. 7pm. Harvard Book Store Cambridge, MA, Tue 4/23.more

An evening of fantastic opera interpretations orchestrated by Mezzo-soprano Luretta Bybee, chair of the New England Conservatory Vocal Arts Dept. Arsenal Center for the Arts Watertown, MA, Tue 4/16.more

So, not sure of many of you knew this, but this is National Poetry Month and some poets will be having a feast to celebrate! 6pm. Central Library Boston, MA, Tue 4/16.more

Friendship, love, betrayal, and heartbreak. MassMouth’s competition finalists tell stories on stage about regular people like you and me. 7pm. Coolidge Corner Theater Brookline, MA, Wed 4/17.more

Now on to Patriots Day! It’s a celebration of Lexington, but if you’re too lazy to get out there by bus, there’s a parade in Boston! The Mayor Hissoner will do a flag raising at 9am on City Hall Plaza, a parade will leave from there. The Paul Revere House Boston, MA, Sat 4/20.more

Music virtuosos get together in a fun and rhythmicc concert that mixes Afro-Brazilian, jazz, gospel and soul tunes. You know, just in case you can’t decide which style you like the most. 7pm. Isabella Stewart Gardner Museum Boston, MA, Thu 4/18.more

Get ready to laugh, sing and be touched by this refreshing musical that literally takes friendship through hell and back. 8pm. Agassiz Theatre Cambridge, MA, Thu 4/18–Sun 4/21.more

Be part of an intimate musical moment in the company of talented Armeen Musa, a Bangladeshi-born Berklee student who celebrates her South Asian heritage. 7pm. AIC Center Boston, MA, Fri 4/19.more

Enjoy a wonderful Japanese performance that includes puppetry, dance and masks. After the show, join the artists for a mask-making workshop. 1pm. Geological Lecture Hall Cambridge, MA, Sat 4/20.more

Colombia is a country rich in culture and history. BAJUCOL has prepared a full ballet presentation to show the world what Colombia is all about. John Hancock Auditorium Boston, MA, Sat 4/20.more

There are not lots of true Korean music/dance shows out there. Enjoy the performance by famous Song Young Sook and other Korean traditional artists. Live translation into English will be available. 7:30pm. Pine Manor College Brookline, MA, Sat 4/20.more

A great chance for all those adult children who never wanted to grow up to laugh, be amazed and take an imagination trip. Just don’t let your children become lost ones! 7.30 pm. Wang Theatre Boston, MA, Tue 4/23–Sun 4/28.more