Of all the things attributable to climate change, the rotational poles moving differently is definitely one of the weirder ones. But a new study shows that’s exactly what’s happening. It builds on previous findings to show that disappearing ice is playing a major role, and shows that groundwater depletion is responsible for contributing to wobbles as well.
The findings, published last month in Geophysical Research Letters, uses satellites that track gravity to track what researchers call “polar drift.” While we think of gravity as a constant, it’s actually a moving target based on the shape of the planet. While earthquakes and other geophysical activities can certainly play a role by pushing land around, it’s water that is responsible for the biggest shifts. The satellites used for the study, known as GRACE and GRACE-FO, were calibrated to measure Earth’s shifting mass
By Jeff Berardelli, April 12, 2021 / 6:46 AM / CBS News
Extreme drought across the Western U.S. has become as reliable as a summer afternoon thunderstorm in Florida. And news headlines about drought in the West can seem a bit like a broken record, with some scientists saying the region is on the precipice of permanent drought.
That’s because in 2000, the Western U.S. entered the beginning of what scientists call a megadrought — the second worst in 1,200 years — triggered by a combination of a natural dry cycle and human-caused climate change.
In the past 20 years, the two worst stretches of drought came in 2003 and 2013 — but what is happening right now appears to be the beginning stages of something even more severe. And as we head into the summer dry season, the stage is set for an escalation of extreme dry conditions, with widespread water restrictions expected and yet another dangerous fire season ahead.
By Ariella Cook-Shonkoff and Neelu Tummala, April 7, 2021 at 1:12 p.m. PDT
As vaccine rollouts allow us to plan for a post-pandemic world, we face another looming emergency: the climate crisis.
While pandemic pall is visceral, climate change can feel far off, requiring effort to remain engaged, or at a minimum, to keep paying attention.
But with our future dependent on climate action over the next nine years, it’s urgent that we zoom out of our siloed lives and step into the broader panorama. The climate crisis demands our attention.
As bicoastal medical and mental health practitioners, we are deeply concerned about the adverse health consequences of global warming, including: increased risk of heart disease and stroke, higher rates of violence, the widening spread of infectious diseases as well as the psychological toll.