Liquid water runs down canyons and crater walls over the summer months on Mars, NASA announced today. "There is liquid water today on the surface of Mars," Michael Meyer, the lead scientist on NASA's Mars exploration program, said. "Because of this, we suspect that it is at least possible to have a habitable environment today." "Mars is not the dry, arid planet that we thought of in the past," said NASA's Jim Green. 'Liquid water has been found on Mars." read more
Ian Sample, The Guardian: Liquid water runs down canyons and crater walls over the summer months on Mars, according to researchers who say the discovery raises the chances of being home to some form of life.
The trickles leave long, dark stains on the Martian terrain that can reach hundreds of metres downhill in the warmer months, before they dry up in the autumn as surface temperatures drop.
Images taken from the Mars orbit show cliffs, and the steep walls of valleys and craters, streaked with summertime flows that in the most active spots combine to form intricate fan-like patterns.
Scientists are unsure where the water comes from, but it may rise up from underground ice or salty aquifers, or condense out of the thin Martian atmosphere.
Sam Catherman, The State Column: Carbon credits, or offsetting pollution from one source by preventing it at another, has been around for decades as leaders struggle to address the growing problem of climate change. According to a new report, however, the vast majority of the carbon credits submitted by Russia and Ukraine did not actually correspond to cuts in emissions.
The BBC reports that the offsets created under a UN plan "significantly undermined" efforts to cut down greenhouse gas emissions. In fact, a number of credits may have actually resulted in a 600 million ton increase in CO2 emissions. read more
A Democrat will win the White House next year by the narrowest of margins, according to a well-known election forecaster.
Moody's Analytics is predicting that the Democratic presidential nominee will capture 270 electoral votes in 2016, edging out the Republican nominee's total of 268. The model from Moody's, a group that analyzes economic trends, has a perfect track record, accurately predicting every presidential election since 1980; it nailed the number of electoral votes in President Obama's 2012 victory.
The economics-based election model -- which relies on presidential election results since the 1980 Ronald Reagan-Jimmy Carter contest -- aims to predict voting decisions based on each state's economic and political situation.
Fox News: A new study reports that chronic marijuana use in teenage boys does not appear to be linked to later physical or mental health issues such as depression, psychotic symptoms or asthma. read more