Sep. 21, 2018 12:53PM EST
Muir Woods, which costs $10 for entry, will have free entry on Sept. 22. m01229 / Flickr / CC BY-NC 2.0
By John R. Platt
Sometimes you don't know what you've got until it's gone.
By Marlene Cimons
An individual tree has roots and, of course, it doesn't move. But trees, as a species, do move over time. They migrate in response to environmental challenges, especially climate change. Surprisingly, they don't all go to the Poles, where it is cooler. As it turns out, more of them head west, where it is getting wetter.
In an apparent effort to allay serious public and scientific concerns about contamination threats from genetically engineered (GE) trees, on Aug. 3 researchers at Oregon State University claimed they had genetically engineered sterility into poplar trees. The real story of the study, however, is that the risks of genetically engineering trees are too great and can never fully be known.
The former cricket star's political party, Pakistan Tehreek-e-Insaf (PTI), won last week's elections and campaigned on several environmental initiatives.
When researchers set out to investigate the structure, growth and age of Africa's iconic baobab trees—the largest and longest-living flowering trees in the world—they received a devastating surprise. Many of the oldest, largest baobabs were dead or dying.
The final study, published in Nature Plants Monday, reported that nine of the 13 oldest and five of the six largest African baobabs had entirely or partly died during the research period from 2005 to 2017. The oldest was 2,500 years old.
By Dan Nosowitz
A recent study from the USDA's Forest Service used aerial imagery to take a look at the change in tree cover in the U.S.'s cities and towns over a five-year period, from 2009 to 2014. What they found is staggering: each year over that period, non-rural areas lost 36 million trees.
The benefits of trees are incalculable, from providing oxygen and cooling our streets with shade, to helping us relax and connect with nature.
But in a world experiencing increasingly extreme weather, many tree species are at risk. For instance, last year's devastating hurricanes—Harvey, Irma and Maria—snapped and downed innumerable trees, altering treasured landscapes in Texas, Florida and the Caribbean.
By Mikaela Weisse and Katie Fletcher
This edition of Places to Watch examines forest clearing detected between Nov. 9, 2017, and Jan. 31, 2018 in Indonesian Papua, Cameroon and Brazil. Due to occasional cloud cover that can obscure satellite recognition, some loss may have occurred earlier.