Renewable energies are the key in the fight against climate change. A startup in Mexico develops solar thermal energy for companies. Parabolic mirrors heat liquids up to 260 degrees Celsius - without generating greenhouse gases.
An electric taxi can travel 150 kilometers on full charge. As the Kenyan capital struggles with air pollution, electric taxis are an opportunity for cleaner transport and also a way to make money.
The world has seen an "extraordinary increase" in energy demand last year, driving energy-related emissions to a new record. The International Energy Agency (IEA) warned that "urgent action is needed on all fronts."
For 155 years, Bottrop was a coal town in the industrial Ruhr Valley. Now, the mine is history, but the city is taking the end of this era in stride. Carsten Grün reports on why Bottrop is optimistic about the future.
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