Sign up for The Ed’s Up, a weekly newsletter of my writing. Here’s a recent example.

252 million years ago, 96% of life went extinct in just 60,000 years. We still don’t really know why. By Carl Zimmer.

First ever photos of a successful snow leopard kill in the wild. Beautiful.

The most beautiful animal you’ve never seen, by Rebecca Helm.

Some couples are now using IVF to screen embryos & avoid passing BRCA breast cancer genes onto kids. By Bonnie Rochman.

The US Supreme Court years ago ruled against applying the death penalty to people unable to understand the legal process. Now it must grapple with the science of how intellectual disability is measured. Fascinating piece by