By Heidi Harley

science / science - 5 years ago

Travel to Mars would imply radiation limit for astronauts

Mexico, Sep. 19 (Notimex) .- Astronauts on a mission to Mars would be exposed to at least 60 percent of the total recommended dose of radiation during the trip to and from the "red planet," according to data from the TGO satellite. Satellite data from the European Space Agency (ESA) and th...

science / science - 5 years ago

Greenland and the hunt for better climate science

Flying over eastern Greenland, the NASA scientists stared down from a Gulfstream jet as it followed the precise course they had flown in previous years - using radar to map the loss of ice. “In the tube,” flight engineer David Elliott said as the team locked into their route over the ice sheet...

science / science - 5 years ago

Significant Digits For Wednesday, Sept. 19, 2018

You’re reading Significant Digits, a daily digest of the numbers tucked inside the news. 5.3 million square feet in Manhattan WeWork, the ubiquitous co-working outfit, now occupies more office space in Manhattan than any other company — 5.3 million square feet, or about 0.2 square miles. (Manhattan...

science / science - 5 years ago

Shell and Exxon's secret 1980s climate change warnings

One day in 1961, an American economist named Daniel Ellsberg& stumbled across a piece of paper& with apocalyptic implications. Ellsberg, who was advising the US government on its secret nuclear war plans, had discovered a document that contained an official estimate of the death toll in a preemptive...

science / science - 5 years ago

After the storm: hardship endures for Puerto Ricans on US mainland

They arrived in New York from Puerto Rico after Hurricane Maria ravaged the island in September 2017, leaving widespread devastation in its wake and a death toll that would spiral to almost 3,000. A year on, Joannelly Cruz and her mother Gloria Martinez are in a homeless shelter, part of a generati...

science / science - 5 years ago

Air pollution linked to higher risk of dementia: study

Urban air pollution, mostly from vehicles, is associated with an increased risk of dementia, according to research published Wednesday. The link remained even after heavy drinking, smoking and other well established risk factors for dementia were ruled out, the researchers reported in medical journ...