A high-profile group of thinkers has come up with a straightforward way to integrate long-term forest management into an international agreement on halting deforestation. It is not clear whether the proposal
Dinitrogen (N2) fixation is widely recognized as an important process in controlling ecosystem responses to global environmental change, both today and in the past; however, significant discrepancies exist between theory and observations of patterns of N2 fixation across major sectors of the land biosphere.
Oceanic anoxic events (OAEs) were episodes of widespread marine anoxia during which large amounts of organic carbon were buried on the ocean floor under oxygen-deficient bottom waters. OAE2, occurring at the Cenomanian/Turonian boundary (about 93.5 Myr ago), is the most widespread and best defined OAE of the mid-Cretaceous.
From the timing, it looks as if an episode of marked oceanic oxygen deficiency during the Cretaceous was the result of undersea volcanism. Studies of such events are relevant to the warming world of today.
A research vessel embedded in the thinning Arctic sea ice has a front-row seat for the cryospheric show of the century. Quirin Schiermeier reports from Darnley Bay, Canada.
In your Editorial 'Two symbols, one solution' (Nature 453, 427; 2008) on symbols used to publicize the challenges of global warming, you caution against focusing on animals rather than people. But symbols can be powerful
