EarthThe instability of past ecosystems shows we must cut emissions now A model of how Earth has responded to climate changes over the past 800,000 years reveals just how sensitive our planet is to change Leader
EnvironmentWe’ve missed many chances to curb global warming. This may be our last Keeping warming to a manageable (but still dangerous) 1.5°C is possible, strictly speaking, but it will be the largest project humanity has ever undertaken Leader