Science & Nature Programs
There Goes the Sun: A Total-Solar-Eclipse Countdown

Date
Wednesday, February 22, 2017 - 6:45 p.m. to 8:45 p.m.
Why Time Flies

It’s the clock that ticks inside us every living moment. But what do we really know about the idea of time? New Yorker writer Alan Burdick discusses what he discovered through his quest to explore how we conceptualize time and why we perceive it the way we do.

Date
Thursday, March 9, 2017 - 6:45 p.m. to 8:45 p.m.
The Philadelphia Flower Show
All-Day Tour

The 2017 edition of the world’s largest indoor flower exhibition—all 10 colorful acres of it—salutes the Netherlands with the theme Holland: Flowering the World. The legendary show is the perfect place for gardeners and flower enthusiasts to spend a day filled with beauty.

Date
Friday, March 17, 2017 - 9:30 a.m. to 9:00 p.m.
Vertical Gardens

Vertical gardens are cropping up all over town, and can provide great inspirations for making your own space-saving green dreams a reality. Learn about the principles, technologies, and techniques of this unique approach to growing herbs, flowers, and produce from two local urban-farming pros.

Date
Saturday, March 18, 2017 - 1:00 p.m. to 3:00 p.m.
Physicist Lawrence Krauss: Why Are We Here?

In his bestselling book, A Universe from Nothing, the internationally renowned theoretical physicist Lawrence Krauss revealed how our entire universe could arise from nothing. Now, Krauss draws on his blend of reason, rigorous research, and engaging storytelling to present a dramatic story of the discovery of the hidden world of reality and the scientists who have helped to unravel its unexpected fabric.

Date
Wednesday, March 22, 2017 - 6:45 p.m. to 8:15 p.m.
An Ancient Philosopher’s Guide to the Galaxy: The Mysterious Antikythera Mechanism

Alexander Jones of the Institute for the Study of the Ancient World at New York University shares some the long-held secrets of one of the most intriguing archeological finds ever made: a sophisticated astronomical guide from around 200 B.C.

Date
Friday, March 24, 2017 - 6:45 p.m. to 8:45 p.m.
Where the River Flows: Scientific Reflections on Earth’s Waterways

Geophysicist Sean W. Fleming examines how mathematics and physics can reveal the hidden dynamics of rivers, offering insights into the profound interrelationships that they have with landscapes, ecosystems, and societies.

Date
Wednesday, April 5, 2017 - 6:45 p.m. to 8:15 p.m.
A Rock Creek Park Tour
All-Day Tour

Celebrate the beauty of spring on a daylong guided visit to DC’s beloved urban oasis, Rock Creek Park, with local natural historian Melanie Choukas-Bradley and other experts on the park and its history.

Date
Friday, April 14, 2017 - 9:30 a.m. to 4:00 p.m.
Urban Wildlife: Balancing Coexistence and Management

Washingtonians share our city, filled with parks and abundant green spaces, with plenty of non-human fellow residents. Wildlife biologist John Hadidian examines the challenges and rewards of becoming better neighbors in nature.

Date
Wednesday, April 19, 2017 - 6:45 p.m. to 8:45 p.m.
Telling Fact from Falsehood: Skills to Expose Pseudoscience

How do we know what we know? It’s hard enough parsing fact from fiction in today’s so-called post-truth environment, but how can we recognize science fact from pseudoscience? Paleontologist Thomas Holtz shares questions we need to ask to get to the truth.

Date
Tuesday, April 25, 2017 - 6:45 p.m. to 8:45 p.m.
Spring at the National Arboretum
Morning Tour

The National Arboretum, one of DC’s best-kept secrets, is home to 9 miles of winding parkland roads covering more than 450 acres. Enjoy a spring tour at what is usually the peak blooming time for azaleas, dogwoods, and seasonal wildflowers.

Date
Wednesday, April 26, 2017 - 8:30 a.m. to 12:30 p.m.
Spring at the National Arboretum
Afternoon Tour

The National Arboretum, one of DC’s best-kept secrets, is home to 9 miles of winding parkland roads covering more than 450 acres. Enjoy a spring tour at what is usually the peak blooming time for azaleas, dogwoods, and seasonal wildflowers.

Date
Wednesday, April 26, 2017 - 1:00 p.m. to 5:00 p.m.
Shedding Light on Dark Matter

During the past century, advances in technology have allowed for the introduction of radical ideas about the nature of the cosmos and our place in it. Theoretical astrophysicist Priya Natarajan traces the arc of the acceptance of two such ideas: that of dark matter and black holes. She also discusses her intriguing work in mapping dark matter and modeling supermassive black holes.

Date
Tuesday, May 2, 2017 - 6:45 p.m. to 8:45 p.m.