News
- Earth
Clearing the Air: Ozone-killing bromine is on the decline
Chemical analyses of Earth's lower atmosphere show that the overall concentration of bromine, a component of some potent ozone-destroying chemicals, has dropped by 5 percent since peaking in 1998.
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Uneasy Breathing: Lung ills linked to suicidal thoughts
Patients who suffer from asthma and other lung disorders report thoughts of suicide and self-harm far more often than do people treated for other physical illnesses.
- Animals
Musical Pairs: Egg-deploying bird species divide for a song
A new genetic analysis bolsters the idea that musical taste, rather than geography, split Africa's indigobirds into multiple species.
- Tech
Bomb Sniffer: Cantilevers detect trace amounts of explosives
An ultra-sensitive chemical sensor uses microcantilevers to detect airborne plastic explosives within seconds.
