Earth
- Earth
Night lights may foster depression
In animals, chronic dim light triggers brain changes that disappear with the return of nightlong darkness.
- Life
Polar bears’ ancient roots pushed way back
Full genetic blueprints suggest the animals split from brown bears millions of years ago.
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- Earth
Field test stashes climate-warming carbon in deep ocean
Strategically dumping the metal stimulates a bloom of microscopic creatures that carry the greenhouse gas to Davy Jones’s locker.
- Tech
FDA bans BPA in baby bottles, cups
From now on, U.S. manufacturers may no longer produce polycarbonate baby bottles and sippy cups (for toddlers) if the clear plastic had been manufactured from bisphenol A, a hormone-mimicking compound. Long-awaited, the announcement is anything but a bold gesture. The Obama administration decided to lock this barn door after the cow had died.
- Humans
Putting BPA-based dental fillings in perspective
A new study finds that children who have their cavities filled with a white composite resin known as bis-GMA appear to develop small but quantifiable drops in psychosocial function. To put it simply: Treated kids can become more moody, aggressive and generally less well adjusted.
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- Earth
Warming indicted for extreme weather
Climate change can explain some 2011 departures from the norm.
- Humans
Lead poisoning stymies condor recovery
California’s iconic comeback species may need human help as long as even a small percentage of the carcasses they eat contain lead shot.
- Humans
Ozone: Heart of the matter
As reported this week, breathing elevated ozone levels can mess with the cardiovascular system, potentially putting vulnerable populations — such as the elderly and persons with diabetes or heart disease — at heightened risk of heart attack, stroke and sudden death from arrhythmias. Is this really new? Turns out it is.
- Earth
Ozone hikes cardiovascular risk
The pollutant triggers inflammation and other changes that can heighten the risk of heart attack and stroke.
- Earth
East Coast faces faster sea level rise
From North Carolina to Massachusetts, waters are rising more rapidly than the global average.
