There's a conundrum that has perplexed biologists since Charles Darwin himself. Why do some exotic species take off as invasive pests while others don't?

Though a major fire killed a million Joshua trees in the Mojave desert, researchers found that fungi and bacteria underneath the scorched earth were totally unaffected.

Concerns about falling branches, aging trees, and maintaining a healthy shade canopy dominated discussions on Thursday afternoon during the town’s public shade tree hearing, where officials reviewed ...

BERKS COUNTY, Pa. - Throughout Berks County, thousands experienced power outages and wind damage Friday afternoon. In the Lyons area, the wind toppled a tree onto a trailer, trapping a person inside.

Scientists have planted American trees in China, Korea and elsewhere to attract hungry insects. Their hope is to identify the ...

The rain and snow Colorado picked up this week may have helped chip away at drought conditions, but tree experts say one wet ...

Forensic DNA experts say it should take the Pentagon years—not decades—to ID the remains of thousands of nameless service ...

Perhaps you’ve inherited a mature Douglas fir canopy. Or, maybe your garden was sunnier a few years ago, but as nearby trees filled in, the light equation shifted. Many gardeners complain about ...

Some of the most serious threats to our forests do not arrive with smoke or headlines. They move quietly, through bark and new growth, weakening ecosystems long before we notice. Without sustained ...

Secrets about how giant trees grew in reverse can be found in fossil imprints of their roots. Micro-CT scanning shows that the roots were growing tip-to-tail like shoots. Stigmaria (meaning "little ...

Writing this, I am experiencing a real dilemma and would welcome any comments or suggestions as to what I need to do. Part way down my rolling backyard sits a huge, old elm tree. It has provided shade ...