The impact of climate change is becoming evident in Alaska faster and more dramatically than anywhere else on earth. Deutsche Welle reporter Irene Quaile visited Alaska with the Climate Change College.
The UN has said the concentration of carbon dioxide (CO2) in the atmosphere hit a record 400 parts per million in 2015. That means the effects of climate change will last generations even if immediate action is taken.
Leonardo DiCaprio's documentary film "Before the Flood" will crown his environmental activism - and burn climate change into the public eye. But DiCaprio is only one of a number of celebrities acting on the issue.
Members of the United Nations have agreed to new guidelines to curb problems arising from rapid urban growth. The New Urban Agenda will help planners and leaders in making cities resilient.
As urban populations around the world swell, one of the problems that urgently needs to be adressed is waste water managment. Lucy Mutinda is offering Kenyan businesses and individuals a smart solution.
Nigerians often complain there’s not enough power. Managing its use - for example with energy-saving light bulbs - can mean there’s more to go round.
African lions could soon be extinct as agriculture encroaches on their habitat. Two zoologists are working to persuade Masai herdspeople to coexist with the king of beasts.
Across northern Europe the fall season is underway, with deciduous temperate forests turning rich shades of red, gold and yellow.
The African penguin is a small animal with a big personality. That's why this conservationist loves them.
Living with lions on the brink of extinction, and bright eco ideas from energy-saving light bulbs to elephant poo paper.
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