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The main driver of climate change is the greenhouse effect – when certain gases in the Earth’s atmosphere trap the sun’s heat and cause global warming. Richard Drury/Getty Images

Climate change report: what we must do to avert the looming crisis

Emission of greenhouse gases is on the rise, an indication that the worst lies ahead.
Moving surplus rhinos to set up new populations, and hunting small numbers of males encourages population growth and range expansion. Michael 't Sas-Rolfes

How legal hunting supports African rhino conservation

Legal hunting helps rhino conservation for biological and socio-economic reasons.
Motorists drive at night on a road without street light as Nigeria struggles with power outages in a commercial district of Lagos. Photo by PIUS UTOMI EKPEI/AFP via Getty Images

Why Nigeria’s electricity grid collapses and how to shore it up

Nigeria’s national electricity grid has collapsed more than 200 times since 2010, regularly resulting in widespread blackouts.

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