Ahead of a special appearance in Vancouver, celebrated nature writer Robert Macfarlane makes the case for approaching rivers ...

The muffling effect is largely due to rustling leaves — plus other woodland white noise, like bird songs — and just a few well-placed trees can cut background sound by 5 to 10 decibels ...

We tested an active hyperspectral LiDAR instrument in a laboratory measurement of spruce and pine trees to find out whether these species could be separated by means of combined range and reflectance ...