Despite advertising as one of Ukraine's biggest independent gas producers, the energy company where Joe Biden's son Hunter sat on the board, is registered in Cyprus and is invisible in Kyiv.
Farmers say their livestock and operations are being unfairly blamed for greenhouse gas emissions. They descended on The Hague, causing what's been called the country's worst morning rush hour.
The multibillion-dollar solar photovoltaic industry has roots in an unexpected place. More than 40 years ago, oil companies invested in solar research and development that have proved critical.
The House opens an impeachment inquiry. The acting director of national intelligence testifies before Congress about a whistleblower complaint. Greta Thunberg dresses down world leaders at a climate conference.
The plant is best known for the partial meltdown of one of its nuclear reactors in 1979. The remaining reactor stopped producing electricity on Friday. Decommissioning the site will take decades.