California is home to millions of urban trees: What happens when they die?

To stop California’s 6 million urban trees from knocking out power lines, crashing through houses, or lying across streets when they die, humans have to intervene. To stop California’s 6 million urban trees from knocking out power lines, crashing through houses, or lying across streets when they die, humans have to intervene. Ecology Phys.org – latest science and technology news stories