In much of Africa, drinking water is too high in fluoride, which can damage teeth and joints. A German project to install a solar-powered filter system in a Ghanain village is tackling the problem.
Cooling devices are critical for millions of people worldwide, particularly with rising temperatures. But while such appliances save lives, they're also big contributors to global warming. Can we stay cool sustainably?
Forests, particularly tropical ones, are fundamental to the fight against climate change. They produce oxygen, store carbon and are home to millions of people and animals. Yet they are disappearing at an alarming rate.
Current high temperatures in the northern hemisphere are set to continue. Climate change means we're likely to experience very hot summers more often — even though we're already struggling with health consequences now.
Germany has more than 28,000 wind turbines — but many are old and by 2023 more than a third must be decommissioned. Disposing of them is a huge environmental problem. Expert Jan Tessmer tells DW he's optimistic.
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