A herd of “elite” brush-clearing goats demonstrate why they are a versatile tool to shield against wildfires in Southern California.
Nearly all the body’s cells contain identical DNA. So why does a neuron grow up so differently than a liver cell? Proteins, says Akhilesh Pandey, a professor at the Johns Hopkins University.
World health experts will meet to discuss whether or not to destroy the last live samples of smallpox virus.