Earth
- Earth
Gasp! Ozone limits don’t protect babies
In healthy infants, even ozone concentrations well below those allowed by federal law trigger asthmalike symptoms.
- Earth
Toxic Tides: Another reason to worry about hurricanes
The hurricanes that struck Florida in the summer of 2004 also may have triggered an intense, widespread, and long-lasting red tide that afflicted the state's west-central coast throughout 2005.
- Earth
Deep-sea action
Scientists using remotely operated vehicles have reported the first close-up observations of a deep undersea volcano during its eruption.
- Earth
Oil Booms: Whales don’t avoid noise of seismic exploration
Field tests in the Gulf of Mexico suggest that sperm whales there don't swim away from boats conducting seismic surveys of the seafloor, but the noise generated by such activity may be subtly affecting the whales' feeding behavior. With video.
- Earth
Lazarus, the amphibian
The painted frog, unseen for more than a decade and feared to be extinct, has resurfaced in a remote desert highland of Colombia.
- Earth
Pumped-up Poison Ivy: Carbon dioxide boosts plant’s size, toxicity
Rising carbon dioxide in the atmosphere could make poison ivy grow much faster and become more toxic.
- Earth
Three Gorges Dam is affecting ocean life
Oceanographic surveys suggest that China's Three Gorges Dam is already influencing biological productivity in the East China Sea, even though the structure is still under construction.
- Agriculture
Biotech cotton: Less spray but same yield
The way farmers grow transgenic cotton in Arizona lets them skip some of their regular spraying but end up with the same yield as traditional farmers, as well as the same impact on ants and beetles.
- Earth
Blast Survivors: Fragments of asteroid found in ancient crater
Pieces of an asteroid that blasted a 70-kilometer-wide crater in southern Africa millions of years ago may have been found intact inside the thick layer of once-molten rock that the impact left behind.
- Earth
Tainted by Cleanser: Antimicrobial agent persists in sludge
About 76 percent of a commonly used antimicrobial agent exits sewage-treatment plants as a component of the sludge that's often used as a farm fertilizer.
- Earth
Particular Problems
Toxicologists and chemists are forging a new field called nanotoxicology as they grapple with assessing the safety of engineered nanoparticles.
- Earth
Brain Delay: Air pollutants linked to slow childhood mental development
Pollutants spewing from vehicles and power plants may be harmful to fetal brains.
