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Understanding Phylogeny Uncertainty in the Mammal Tree of Life

Understanding Phylogeny Uncertainty in the Mammal Tree of Life

Image courtesy of Tree of Life, from The Evolution of Man, Ernst Haeckel, 1879. Professor Walter Jetz’s biology lab at Yale University studies trees of evolutionary heritage known as phylogenies, as part of a project to reconstruct the tree of

Holding onto Energy: New insights into lithium sulfur batteries

Holding onto Energy: New insights into lithium sulfur batteries

Batteries have revolutionized modern life. Now, there is a push for bat­teries to undergo their own revolution. The electronics we use on a dai­ly basis run on lithium-ion batteries, but a new battery with lower cost and higher energy density

How Halogens Caused the End-Permian Extinction

How Halogens Caused the End-Permian Extinction

The end-Permian extinction was devastatingly destructive on a scale hard to comprehend. Ozone degradation and large fluctuations in temperature made the earth unsuitable for habitation, leading to the extinction of over 90 percent of all marine life and over 70