In a new study, legendary climate scientist James Hansen predicts that the Earth's temperature rise will accelerate in the upcoming decades and will reach 2 degrees Celsius above preindustrial temperatures by 2050. This is significantly more than the most common estimates from groups such as the Intergovernmental Panel on Climate Change, or IPCC, typically considered the planet's gold standard for climate forecasts. According to NASA, a "2-degree rise in global temperatures is considered a critical threshold above which dangerous and cascading effects of human-generated climate change will occur." Tap the link in our bio to learn more about the study.