Earth may already be too hot for the survival of polar ice sheets, study says

Ten years ago, policymakers and nation states set the world’s most important climate goal: limiting planetary warming to 1.5 degrees Celsius (2.7 degrees Fahrenheit). If the Earth could stay below that threshold, a climate catastrophe and major rise in sea levels might be staved off.

But a group of scientists have demonstrated that if the world stays on course to warm up to 1.5 degrees — or even stays at its current level of 1.2 degrees above preindustrial levels — polar ice sheets will probably continue to quickly melt, causing seas to rise and displacing coastal communities, according to a study published Tuesday in Communications Earth and Environment.