Wind tunnel experiments demonstrate that leaves trap ... published May 16 in Environmental Science & Technology, finds. Birch, the best-performing tree, removed 79 percent of these ultrafine ...

Outside the warm hut, gnarly birch trees formed a spiderweb of branches ... Between eruptions it was pretty quiet, except for the wind, the sea, and the screech of seabirds. The Icelanders infused ...

Michael Mosley and surgeon Gabriel Weston help test a new pollution filter developed by Professor Barbara Maher at the University of Lancaster: silver birch trees. We set up a row of 24 young ...