Mining spoils were dumped into open cast brown coal mines in Germany. Now, the reclaimed land is subsiding.
Renewable energies don’t always provide power at consistent rates. Wind energy, for example, produces greater or smaller quantities of power depending on the strength of the wind.
Hailstorms wreak havoc and cause millions of euro worth of damage each year. Until now, meteorologists have had very little technology to monitor the weather phenomenon.
Paper, e-waste or leftover plastics - the key to recycling materials is sorting. At a pilot plant at the TOMRA company in Mülheim-Kärlich, in western Germany, experts are testing ways of separating waste materials.
For twenty years, Peter Wohlleben has been caring for a forest in the Eifel Region. It's one of Germany's oldest forests, dating back 4,000 years.
The ongoing thaw in the Earth’s polar regions has led to the discovery of surprising fossils. In the early 1990s, the prehistoric mummy Ötzi became famous. Now news of a 30,000-year-old giant virus is in the headlines.
An estimated 150 porpoises are killed by fishing nets every year on the Baltic coast. The marine mammals, which have to surface regularly to breathe, get caught in the nets and drown.
As is the case along many of Europe's waterways, large stretches of the banks along the River Danube have been sealed up with concrete. That's destroyed large swathes of the surrounding alluvial forest.
The rainforests of the Republic of Congo are home to the rare lowland gorillas. The majority live outside the national parks in areas that are open to logging operations.
On the Orkney Islands, north of Scotland, a number of companies are testing new forms of electricity generation. They want to tap the power of the oceans using offshore tidal current and wave-powered turbines.
Heligoland is an important nesting site for seabirds. Some species only nest here, where they are safe from predators. But the seabirds have a new enemy - against which they have no natural defenses.
Overfishing is a serious problem in the world's oceans, and aquaculture is one promising way to continue to supply people with the healthy protein that fish provide.
A rising concentration of CO2 in the atmosphere is also having an effect on the world’s oceans. Researchers in Kiel are trying to find out more about exactly what that means for marine ecosystems.
We visit German climate researchers in the northern Siberian wilderness of the Lena Delta. They’re studying how the thawing of permafrost is affecting climate change.
By planting trees in arable land, farmers can improve crop yields, prevent soil erosion, promote biodiversity and provide a source of energy.
Why do tropical cyclones apparently develop out of thin air - and how can we predict what path they will take?
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