FULUFJALLET, Sweden (Reuters) - On a windswept Swedish mountain, a 10,000-year-old spruce with a claim to be the world's oldest tree is getting a new lease of life thanks to global warming, even as many plants are struggling.
Scientists are finding that the drift of growing areas for many plants out toward the poles is moving not in a smooth progression but in fits and starts, causing problems for farmers aiming to adapt and invest in cash crops that are more sensitive to climate than is this ancient conifer known as "Old Tjikko".
