Carbon offset

Experts weigh in on the increasingly popular practice and how to best make an impact.
We need forests to fight climate change, but planting trees to cancel out emissions is a lot harder than it looks.
Conservationists have a plan for families to transform their trees into weapons against the climate crisis, and Amazon just pledged $10 million.
In a Democratic field where it's increasingly hard to stand out on climate change, the Vermont senator is quick on the draw with a time-tested campaign move.