Using new and published marine fossil radiocarbon (14C) measurements, a tracer uniquely sensitive to circulation and air-sea gas exchange, we establish several benchmarks for Atlantic, Southern, and Pacific deep-sea circula- tion and ventilation since the last ice age. We find the most 14C-depleted water in glacial Pacific bottom depths, rather ...
Where: Santa CruzCost: Free
Symmetry, topology, and the many faces of condensed matterSymmetry is powerful principle in physics, allowing us to make exact statements even in regimes where controlled calculations are challenging or impossible. Thus, understanding the ways in which different types of symmetries can constrain phases of matter is an important component of understanding what nature is capable of. Â In this ...
Increasingly severe and frequent floods and droughts inevitably spur calls for higher levees, bigger drains, and longer aqueducts. But as we grapple with extreme weather, a hard truth is emerging: our development, including concrete infrastructure designed to control water, is actually exacerbating our problems. Because sooner or later, water always ...
With hundreds of bird species found throughout the San Francisco Bay Area, we are fortunate to have several birding organizations dedicated to appreciating and conserving the birds here. In the third part of SFBBO's Birding the Bay Area series, Madrone Audubon and Napa-Solano Audubon will share a few of their ...
The nature of dark matter is one of the biggest mysteries of the modern era. All the matter that we see makes up just one sixth of the total mass of the Universe - there’s five times as much again in this mysterious stuff we call ‘dark matter’. We know ...
