Is global warming irreversible?

Even if carbon dioxide emissions were halted today, global warming and the environmental disruption that comes with it would continue for 1000 years, says a sobering study. Scientists are urging politicians to proceed with caution as they set new target levels for emissions. read more

The idea that changes will be irreversible has consequences for how we should deal with climate change. The global thermostat can't be turned down quickly once it's been turned up, so scientists say we need to proceed with more caution right now. read more