A trace fossil of an iguana burrow was discovered on San Salvador Island in the Bahamas. Estimated to be 115,000 years old, it is the first known fossil of its kind.
Researchers are using a newly developed satellite tag to study previously unknown aspects of tiger shark reproduction. This approach could be used on other difficult-to-study shark species.
David Campbell, Binghamton University, State University of New York
After a hurricane strikes or an earthquake makes shockwaves, try to support nonprofits that are clear about what they do and how they will spend your money.