India's Heatwave Danger Underestimated; Gulf Stream Slowdown Could Chill Europe

• India's heatwave criteria do not consider humidity, leading to an underestimation of heat danger.

• Deadly wet-bulb temperatures, where perspiration does not evaporate, are occurring more frequently.

• Potential slowdown or collapse of the Gulf Stream could plunge Northern Europe into a colder climate.

• The Gulf Stream moves huge amounts of heat from the tropics to Northern Europe and back again.

• Scientists warn the Gulf Stream could begin slowing dramatically or stopping as early as 2025.