Due to popular demand, we are offering another session of this free webinar. Led by naturalist and conservationist, Michael Wojtech, you'll learn to identify tree species by their bark and discover why such a variety of bark characteristics exist. Why do some species have smooth bark, while on others it is thick and broken? Why does bark peel? Join us to find out!
Center for Astrophysics | Harvard & Smithsonian—Online
The first person who will set foot on Mars is alive right now. We believe this, but even if we're wrong we know the first crew to arrive there will look nothing like the ones that landed on the Moon fifty years ago.
Our world has changed for the better, and ASTRONAUTS tells the story of the women who built this better world. The main character and narrator is Mary Cleave, an astronaut you may not have heard of. It's not because so many people have been to space; only a few hundred have! It’s because this graphic novel isn’t about fame. No astronaut you'll ever meet took the...
Dana Greenhouse, Arnold Arboretum, 125 Arborway, Jamaica Plain, MA 02130
Learn about seed biology, embryo dormancy, and factors present in woody plant seeds. The class will focus on seed storage and various treatment techniques, including over-wintering and aftercare. Appropriate for those who have succeeded at growing some plants from seed and are ready for greater challenges. Post-class nurturing will be required. Fee $55 members; $68 non-members.
Hunnewell Building, Arnold Arboretum, 125 Arborway, Boston
Particles in our atmosphere, whether from the natural environment or from human-built engines, affect climate in ways we don’t yet fully understand. MIT Professor Dan Cziczo will speak of particles and clouds in our atmosphere and how climate is influenced by them. The evening will begin outdoors at Fog x Hill, a Fujiko Nakaya fog exhibit at the Arboretum and then shift indoors for a lecture about clouds and climate. Arrive promptly at 6:30pm to view Fog x Hill, a timed-release landscape...
Geological Lecture Hall, 24 Oxford Street, Cambridge MA
James W. Porter, Josiah Meigs Distinguished Professor Emeritus, Odum School of Ecology, University of Georgia
Coral reefs support more than a quarter of all marine life, yet many are critically endangered. In the Florida Keys, the once common elk horn coral (Acropora palmata) has experienced steep declines since the 1970s. Preliminary blame was attributed to global warming and coral bleaching, but in fact, a human bacterial pathogen associated with a wide range of serious infections was the culprit. James Porter will discuss how Key West residents are saving these reefs...