There's a lot of discussion about tipping points in relation to environmental issues and climate change is no exception. Most were assumed to be sometime in the (near) future, but it appears as if we're starting to see them being reached already.
This new video from Yale's Climate Connections website shows how glacial melting in Antarctica has already started and that there's nothing that we can do to stop it. This will not only lead to sea level rise, but will irreversibly change the topography of Antarctica.
The early May research headed by lead author Eric Rignot of NASA called attention to melting now under way in Antarctica that CBS News anchor Scott Pelley reported “cannot be stopped.” “Scientists say the situation is almost certainly unstoppable,” NBC News Anchor Brian Mitchell reported. Rignot cautioned that the research indicates “we’ve passed the point of no return … It’s just a matter of time before these glaciers disappear to the sea.” While he indicated that the full melt, at the current pace, might not occur for two centuries, he pointed too to evidence suggesting the likelihood of an accelerating pace. “There’s probably nothing that can be done to stop this,” Rignot said. “This is really happening,” lead NASA lead polar ice researcher Tom Wagner said. “This weak underbelly of Antarctica is in fact starting to float out into the sea, and there’s not a lot to hold it back.”