News
- Earth
Underwater Pavement: Asphalt deposits cover parts of Gulf of Mexico
Explorations of the seafloor in the southern Gulf of Mexico have revealed lavalike flows of asphalt that are home to a thriving ecosystem of microbes, mussels, tubeworms, and crabs.
- Health & Medicine
Bad Break: Homocysteine may weaken bones
Elderly people with elevated concentrations of the amino acid homocysteine in their blood are more likely to break bones than are people with low amounts.
- Paleontology
Fossil confirms that early arthropods molted
A 505-million-year-old fossil provides hard proof of that ancient arthropods shed their exoskeletons during growth, just as their modern relatives do.
