A Sacramento gym is converting patrons' exertions into electricity.
A floating photovoltaic power plant at the Kruonis hydroelectric facility in Lithuania is the first of its kind in the Baltic region. The market is growing worldwide, and smaller countries like Lithuania can benefit.
The US state, the fifth-largest economy in the world, has committed to producing 100 percent clean electricity by 2045. The law contradicts President Donald Trump's energy policy, aimed at boosting the coal industry.
NASA scientist Peter Kalmus says small changes can make a big difference when it comes to protecting the environment. He's even written a book to inspire others.
In California, the Global Climate Action Summit is trying to convince the world that the US can still play a leading role in the fight against climate change. Local leaders say they won't be deterred by Trump's actions.
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