Water Birds at Lake MerrittMigrating birds are here! See which winter visitors are currently at Lake Merritt, the nation's oldest wildlife refuge.  A naturalist from the Rotary Nature Center will lead a short walk along the lake. Learn about the Pacific Flyway and how to identify some winter migrants as well as year-round residents. We'll begin ...
High-Frequency Power ConvertersThe talk will cover how increases in switching frequency enable the miniaturization of power converters and new ways to fabricate and design power converters. It will address how these design techniques can be used in applications spanning biology, healthcare, space propulsion and automotive that use Wide Bandgap Power semiconductors at MHz frequencies. ...
What are we doing here on this planet? Can a deep-time and deep-space viewpoint help us gain the perspective to create a sustainable civilization? Informed by comparative planetology and a survey of the major transitions in Earth history, David Grinspoon will describe a taxonomy of planetary catastrophes meant to illuminate ...
Where: San FranciscoCost: $15 General, $12 Members and Seniors
