Miami

Science, Tech & Environment

A Miami port dredging project may have damaged the city's offshore coral reef

Coral reefs around the world are under threat. Acidifying oceans due to the rise of CO2 associated with global warming; the El Niño weather system, which has led to massive die-off and bleaching of corals in parts of the Pacific Ocean. And closer to home, commerce also threatens coral: a recent port expansion may have caused serious damage to the reef off of Miami, Florida.

Science, Tech & Environment

Geo answer

Today's answer is Carancas, the Peruvian town that's located near the spot where a mysterious meteorite fell from the sky a few months ago. The World's David Leveille explains why scientists are puzzled by the meteorite and the crater it left behind.