New research from Harvard University indicates that the amount of mercury in the environment is much higher than previously thought. Prior estimates put mercury levels at around 720,000 metric tons; the new study suggests it’s actually two-and-a-half times that number.
Hybrid cars, buses and trucks are as much as 30% more energy efficient than their conventional counterparts. The bulk of this energy savings comes from regenerative braking. This is the process of recapturing the energy that is lost to friction in the process of slowing or stopping the vehicle. Instead of heating up brakes, the wheels slow down by turning a generator and making electricity that can be put to use to power the vehicle or other onboard systems.
Score one for the sharks. According to a new report by WildAid, sales of shark fin soup have dropped by up to 70 percent. A symbol of wealth and status in China and other parts of Asia, shark fin soup has historically been served at weddings, banquets, and government functions. The dishes’ popularity has had a devastating effect on the world’s shark populations.