By Environment Correspondent Deborah Zabarenko WASHINGTON (Reuters) - The amount of climate-warming carbon dioxide in the atmosphere topped 400 parts per million at a key observing station in Hawaii for the first time since measurement began in 1958,... [Full Article]
WASHINGTON (AP) - Worldwide levels of the chief greenhouse gas that causes global warming have hit a milestone, reaching an amount never before encountered by humans, federal scientists said Friday. (Source: Associated Press)... [Full Article]
MIAMI (Reuters) - Two astronauts aboard the International Space Station are preparing for a possible spacewalk to repair an ammonia leak in a cooling system on one of the station's solar arrays, NASA said on Friday. The crew spotted a steady str... [Full Article]
The proportion of carbon dioxide in the atmosphere broke 400 parts per million Thursday (May 9), according to one of the best climate records available. (Source: LiveScience.com)... [Full Article]
Scientists still don't know why hundreds of baby southern right whales are turning up dead around Patagonia, a decade after observers first saw signs of the worst die-off on record for the species, according to the Wildlife Conservation Society ... [Full Article]
The Arctic experienced an extended period of warm temperatures about 3.6 million years ago - before the onset of the ice ages - at a time when the concentration of carbon dioxide in Earth's atmosphere was not much higher than the levels bein... [Full Article]
After cooling its heels for a month on the Red Planet, NASA's Mars rover Curiosity is gearing up for lots of action in the coming weeks. (Source: SPACE.com)... [Full Article]
With many of the world's ecosystems threatened or endangered by human activities like logging and urbanization, the International Union for Conservation of Nature (IUCN) published its criteria for a new "Red List" of endangered ecosyst... [Full Article]
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