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With sufficient investment and strategic deployment, carbon dioxide removal and storage can play a key role in keeping global warming to a level we can live with.

Suddenly marine hotspots are raising sea levels in the eastern US. It may not be a permanent hazard – but it is a warning.

The deep past has cruel lessons for the near future, for example how ocean oxygen depletion can stifle the marine world. It could recur.

Paying for forests conserves a vital world resource. But somebody must pay the locals a tangible share of the intangible global gains.

The thermometer rises, the air becomes saturated, and the warmer, wetter world turns potentially lethal. By 2100, billions could be in danger

Ocean cycles help to determine US drought and fire risk in several western states, with global warming adding to their severity.

Timber rots, cement crumbles, metal corrodes: plastics are there for ever. By 2050 there could be 12 billion tonnes in the world’s landfills.

Profligate fossil fuel use could cause Asian temperatures to rise by 6°C, bringing floods and food shortages for hundreds of millions.