A problem with pollen
Global warming could worsen allergies, says a new study
Flying fines
Clean move
China cuts down its carbon dioxide emissions
Small is efficient
Low carbon emissions
Low carbon emissions
Risky venture
US environmental protection agency under fire
Ocean sours
At current rate seawater will turn acidic by century end
The dominant survives
Increasing nitrogen levels will pit plants against each other
Cattle burps
Methane emissions from Indian livestock lower than estimated
Mosquitoes befuddled
Certain smells can lure mosquitoes away from humans
Thailand
Going under