Pluto's interacting surface and atmospherePluto's main atmospheric species, N2, is also frozen on its surface, as are its minor atmospheric species, CH4 and CO. The New Horizons spacecraft found complicated and intriguing evidence for a dynamically interacting surface and atmosphere. The REX instrument shows a planetary boundary layer that depends on whether there's N2 ...
Where: Mountain ViewCost: Free
The History of the Martian South Polar Cap - RESCHEDULED to Oct 25In the last few years we have found that Mars' south polar cap has as much carbon-dioxide as Mars' current atmosphere. This raises numerous questions about how this massive deposit formed and what Mars was like when it was in the atmosphere. Using a combination of methods including spacecraft imagery, ...
Ten years ago, California Governor Arnold Schwarzenegger signed what many consider to be the most important piece of climate legislation in the world. The law, AB 32, created a market for the right to emit carbon pollution; that market is generating billions of dollars in revenue and is now connected ...
Where: San FranciscoCost: $20 General, $12 Members, $7 Students
Award-winning writer and environmental thought leader Mary Ellen Hannibal wades into tide pools, follows hawks and scours mountains to collect data on threatened species as part of her wide-ranging exploration of today’s tech-enabled citizen science. She harnesses the power of a heroic cast of volunteers to pursue what may be ...
Where: San FranciscoCost: $17 General, -10% members
Mushrooms of the Redwood CoastNorthern California is known for its seemingly endless wet winters which make the mushrooms flourish and its majestic forest. Not only do we have the biggest trees we also have the largest known Chanterelle and Porcini!Six years in the making, the newly published Mushrooms of the Redwood Coast is the ...
Cities and urban regions can make coherent sense, can metabolize efficiently, can use their very complexity to solve problems, and can become so resilient they "bounce forward" when stressed.In this urbanizing century ever more of us live in cities (a majority now; 80% expected by 2100), and cities all over ...
Where: San FranciscoCost: Free for members, TBA General
In September 2015, the Laser Interferometer Gravitational-wave Observatory (LIGO) detected the first gravitational wave signals. The event represents the coalescence of two distinct black holes that were previously in mutual orbit. LIGO's exciting discovery provides direct evidence of what is arguably the last major unconfirmed prediction of Einstein's General Theory ...
