science

Nearly 30 years after the world’s worst nuclear accident, Chernobyl’s fallout continues to cast a long shadow over Europe. A new study says that wildfires could release radiation that remains in the upper layers of soil in the dense forests near the former nuclear plant in Ukraine and Belarus, New …

The United States must maintain a strong astronaut corps, even though human space flight has been temporarily stalled for NASA and many astronauts have retired or quit this year, argues a new report from the National Research Council (NRC). Over the years, the number of astronauts employed by NASA has …

CHICAGO — Carbon dioxide is hazardous to your health, the Environmental Protection Agency says. Oh really? EPA scientists say manmade carbon dioxide and other greenhouse gases are contributing to a warming of the global climate — and as such represent a threat to human welfare. Officials went so far as …

The sudden swarm of earthquakes in Arkansas — including the largest quake to hit the state in 35 years — is very possibly an after effect of natural-gas drilling, experts warn. At issue is a practice called hydraulic fracturing, or “fracking,” in which water is injected into the ground at …