Nuclear chief: US plants safer after Japan crisis

Two years after the nuclear crisis in Japan, the top U.S. regulator says American nuclear power plants are safer than ever, though not trouble-free. A watchdog group calls that assessment overly rosy.

Tea trees crave water during hot and dry summer days

The iconic Australian tea tree (Melaleuca decora) is more vulnerable than native eucalypt species to extreme temperature and moisture stress, Western Sydney University researcher Anne Griebel has discovered. 

Study: Sea stars bulk up to beat the heat

A new study finds that a species of sea star stays cool using a strategy never before seen in the animal kingdom. The sea stars soak up cold sea water into their bodies during high tide as buffer against potentially damaging ...

Japan upgrades Fukushima leak to highest level in two years

Japan declared a radioactive water leak at the crippled Fukushima plant a level-three "serious incident" Wednesday, its highest warning in two years, as operators scrambled to seal a tank that has seeped 300 tonnes of toxic ...

Powerful quake off north Japan kills 4, more than 90 injured

A powerful 7.4 magnitude earthquake struck off the coast of Fukushima in northern Japan on Wednesday night, smashing furniture, knocking out power and killing four people. A small tsunami reached shore, but the low-risk advisory ...

UN atomic agency urges Fukushima safety improvements

The International Atomic Energy Agency on Monday called on the operator of Japan's crippled Fukushima nuclear plant to improve "essential systems" as it struggles to deal with leaks and power cuts.

Trees with grassy areas soften summer heat

Trees cool their environment, and so-called "heat islands" like Munich benefit from it. However, the degree of cooling depends greatly on the tree species and the local conditions. In a recent study, scientists at the Technical ...

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