More than a third of all tree species worldwide face extinction, threatening ecosystems, plants, animals and economies around the world, experts warned Monday. In all, 38% of trees are at risk ...

Various species of native alders abound from Texas into the middle and Northern states, from near sea level up to 10,000 feet ...

The most common North American tree is considered to be the red alder. It has oval-shaped leaves and reddish-brown bark. It can grow as tall as 100 feet and is found mainly in the western U.S. and ...

In South America, which is home to the Amazon Rainforest, 3,356 out of the 13,668 assessed tree species are at risk of extinction due to deforestation for crop farming and livestock ranching.

A review of 47,282 tree species by the International Union for Conservation of Nature found that more than one third are at risk of extinction. By Nicole Norman & E&E News.

The reason why so many tree species can coexist in species-rich forests has long been a subject of debate in ecology. This question is key to understanding the mechanisms governing the dynamics ...

The oldest tree species is the Great Basin bristlecone pine, with many trees dating back around 4,000 years. The oldest tree is named Methuselah and it dates back nearly 5,000 years.

The species also has only been found on one island. The Dendrelaphis roseni, or Rosen’s tree snake, found on Woodlark Island, is the smallest of the newly discovered species, measuring only ...

Lightning is often seen as a killer, leaving behind destruction and death of trees — but one tropical species has evolved to use the force of nature to its benefit. The tonka bean tree ...

Hawaii's native tree snails, known as the "jewels of the forest," are rapidly disappearing. Some of the most imperiled only live in human care now, safeguarded 24 hours a day.

In South America, which is home to the Amazon Rainforest, 3,356 out of the 13,668 assessed tree species are at risk of extinction due to deforestation for crop farming and livestock ranching.