“It has happened,” said Philip Bump. For the first time in human history, atmospheric carbon dioxide levels hit a daily average of 400 parts per million (ppm) last week. “There is now more carbon dioxide in the atmosphere than at any point since 3 million years ago.” Back then, global temperatures were about 7 degrees higher, the Arctic was ice-free, […]
Read more
It’s been five years since the Deepwater Horizon oil rig exploded in the Gulf of Mexico, killing 11 and releasing a torrent of petroleum into the sea. But despite a massive, multibillion-dollar cleanup effort, the effects of the largest marine oil spill in U.S. history may linger for decades. BP (British Petroleum), which operated the rig, has already paid […]
Read more
Soil frost is a nearly universal process in the Arctic. In a recent dissertation by doctoral student Marina Becher at Umeå University, it is shown that the frequency and extent of Arctic soil frost is important for the release of the greenhouse gas carbon dioxide from arctic soil. Soil in the Arctic has for thousands of years gathered large quantities […]
Read more
Stanford scientists have found that chronically low levels of oxygen throughout the oceans hampered the recovery of life after the Permian-Triassic extinction, the most catastrophic die-off in our planet’s history. Also known as the “Great Dying,” global ecosystems collapsed as some 90 percent of species perished in this extinction event 250 million years ago. The new findings, published this week […]
Read more
The temporary housing settlements of Williston, N.D., might seem like an unlikely haunt for archaeologists. Nonetheless, a team of “punk archaeologists” are there, finding the history in the present by peering into the lives of people at the heart of North Dakota’s oil industry. Thanks to the lucrative nature of the “Bakken boom” — the ongoing oil drilling in North […]
Read more
In polluted environments, diesel fumes may be reducing the availability of almost half the most common flower odors that bees use to find their food, research has found. The new findings suggest that toxic nitrous oxide (NOx) in diesel exhausts could be having an even greater effect on bees’ ability to smell out flowers than was previously thought. NOx is […]
Read more
In its early days, Earth became hell. About 3.3 billion years ago, new research indicates, at least two massive asteroids 30 to 60 miles in diameter smashed into this planet, boiling the oceans and sending atmospheric temperatures soaring to an unimaginable 932 degrees Fahrenheit. Stanford University scientists have found evidence of this extreme era in a geological formation in South […]
Read more
Space scientists are trying to figure out how the mystery Mars rock shaped like a jelly doughnut suddenly appeared on Mars’s surface, in full view of the rover Opportunity’s camera. NASA scientists noticed the mystery Mars rock when reviewing images taken by Opportunity as it explored Endeavor Crater. One shot depicted an empty patch of ruddy ground, but the next […]
Read more
Children who attend schools near busy roads could see their brain development hindered by air pollution, according to a new study by Spanish scientists. Researchers in Barcelona spent a year tracking the developmental progress of more than 2,700 children ages 7 to 10 at 39 schools in the city. They found that the cognitive skills of students at schools near […]
Read more
Antarctica’s Ancient Fossils Deep beneath the ice and snow of Antarctica, a hidden world of prehistoric creatures is being uncovered, offering scientists a glimpse into an era when the now-frozen continent was teeming with life. Recent fossil discoveries suggest that Antarctica was once a lush, temperate land home to dinosaurs, enormous amphibians, and unique plant life. Fossils Tell a Different […]
Read more