All the leaves are brown and the sky is grey – which means it’s time for the Geological Society of America annual meeting. A couple of days packed with discussions and research presentations about stuff you did not know in … Continue reading
How have humans influenced Earth? Can geoscientists measure when human impacts began overtaking those of Earth’s other inhabitants and that of the natural Earth system? Responding to increasing scientific recognition that humans have become the foremost agent of change at … Continue reading
Sea levels are rising faster than expected from global warming, and University of Colorado geologist Bill Hay has a good idea why. The last official IPCC report in 2007 projected a global sea level rise between 0.2 and 0.5 meters … Continue reading
You may have felt really lonely walking the face of Earth. Until you looked closer. [Btw: who needs peer-reviewed literature when you've got the annual festival of presentations at the Geological Society of America?]
In our first ice age riddle a couple of days ago we looked at the link between CO2 rise and ice retreat, after the last ice age had reached its max, some 18,000 years ago.
Both supernovae and extreme solar flares can damage Earth’s ozone layer. But perhaps a black hole swallowing a neutron star somewhere not too far away gives a bigger punch – lasting a second or so.
Cold water absorbs more CO2, so it is around the Poles that the consequences of ocean acidification are first felt. Pteropods – tiny swimming Arctic sea snails – have difficulty building their shells at CO2 levels very close to the … Continue reading