This report, part II in a series, looks at likely impacts of 2°C and 4°C warming across three vulnerable regions. It describes risks to agriculture and livelihoods in Sub-Saharan Africa, the rise in sea-level and devastation to coastal areas likely. . .
September 1 marks 100 years since the last known Passenger Pigeon, known as Martha, died at the Cincinnati Zoo. It's hard to imagine now, but at one time this species was the most numerous bird on earth, with a population of 3 to 5 billion birds.