The oceans and their waves could be a huge source of energy. Many have tinkered with the technology needed to harness this power. Up to now, it has been difficult. What new ideas could help us capture the energy of waves?
In Germany, sun, wind, water and biomass have so far produced more electricity in 2019 than coal and nuclear power combined. But it's a snapshot of a special market situation and might not be a long-term trend.
Russian hydropower company RusHydro has launched a wind power plant in Russia’s Arctic region. It's far from a signal that fossil-fuel-hungry Russia is going green, but it's a start.
The Gustav Knepper power station in the western city of Dortmund has been demolished in two explosions. Nearby residents were made to leave their homes during the blasting operation.
With polluted air and a coal-hungry economy, India is using the UN climate conference to show the world it can continue rapid development without fossil fuels. But the South Asian country still runs on dirty energy.
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