U.S. company produces thermal batteries with rocks
Link Copied!A California-based company believes rocks could be the next big answer in renewable energy. CNN's Chief Climate Correspondent Bill Weir reports.
04:57 - Source: CNNncG1vNJzZmivp6x7pLrNZ5qopV%2BrtqWxzqxmsJ2RqbWmvo5rZ2trX2Z%2FcH2UaJyxqF2ptaa%2BzJqjZpqRqcGmvsieqmavlZ6%2FbrzKoGRqamFqfXqt0p6ea2WTo7uqecKloKaZpJp7pLrN