Breaching a “Carbon Threshold” Could Lead to Mass Extinction

Carbon dioxide emissions may trigger a reflex in the carbon cycle, with devastating consequences, study finds. In the brain, when neurons fire off electrical signals to their neighbors, this happens through an “all-or-none” response. The signal only happens once conditions in the cell breach a certain threshold. Now an MIT …

Climate Crisis and Antibiotic Use Could ‘Sink’ Fish Farming Industry – Report

The climate crisis, drug use and feeding farmed fish with wild stocks risks “sinking” the $230bn (£180bn) aquaculture industry, according to an ethical investment network. Fish farms now surpass wild fisheries as the main provider of seafood on our plates, but combined risks from global heating, excessive use of antibiotics, …

Solar Geoengineering Could Be ‘Remarkably Inexpensive’ – Report

Cooling the Earth by injecting sun-blocking particles into the stratosphere could be “remarkably inexpensive”, according to the most detailed engineering analysis to date. The fear of a rogue nation or military force unilaterally taking control of the global climate is unfounded, the researchers added, as the many thousands of high-altitude …

Coral Reefs ‘Will Be Overwhelmed by Rising Oceans’

Scientists have uncovered a new threat to the world’s endangered coral reefs. They have found that most are incapable of growing quickly enough to compensate for rising sea levels triggered by global warming. The study suggests that reefs – which are already suffering serious degradation because the world’s seas are …