convergent evolution

Caecilians are amphibians that look superficially like very large earthworms. New research suggests that at least one species of caecilian also produces "milk" for its hatchlings.

Science
Environment

Researchers have found an amphibian that makes milk for its babies

2:33pm March 07, 2024

by Geoff Brumfiel

The snake-like amphibian is native to Brazil. Researchers say the milk in many ways resembles that produced by mammals.

An electron microscope image shows a SARS-CoV-2 particle isolated in the early days of the pandemic. It's been nearly a year since omicron was first detected, and scientists say this branch of the coronavirus family tree is still thriving.

Health & Safety
Science

Omicron keeps finding new evolutionary tricks to outsmart our immunity

5:02am October 25, 2022

by Rob Stein

SARS-CoV-2 is evolving "rapidly," spawning one new variant after another. But omicron continues to dominate, raising new questions about how evolution of the virus is headed.