Road bicycle racers are exciting to watch as they race in tight packs at speeds between 30-40 miles per hour. Cycling is a risky sport, and numerous racers have been injured or killed as they contend with the challenges of hazardous road and environmental conditions like strong cross winds. Some new technology may help reduce the risk of cycling accidents.

Some are concerned that global warming will cause the polar ice caps to melt, leading to an increase in global sea level. If such a rise in sea level occurred slowly, coastal peoples would have time to adjust to the change. But many are concerned that sea level could rise rapidly, leading to a humanitarian catastrophe.

Geologists reassessed the abundance of fossils in Earth’s uppermost rock layers this year, and they believe they found a remarkable sixth global extinction event.¹ Their discovery has two significant implications.