Some plant roots draw a line in the sand — literally. In South Africa, you can move between cool, green forest and sunbaked shrubland in a single stride. These narrow…
Category: Plants
Earth may have 9,200 more tree species than previously thought
Trillions of trees are growing on Earth, though how many kinds there are has been underestimated, a new study finds. Earth hosts roughly 64,100 known tree species. But there could…
Simple hand-built structures can help streams survive wildfires and drought
Wearing waders and work gloves, three dozen employees from the U.S. Department of Agriculture’s Natural Resources Conservation Service stood at a small creek amid the dry sagebrush of southeastern Idaho.…
Invasive grasses are taking over the American West’s sea of sagebrush
No one likes a cheater, especially one that prospers as easily as the grass Bromus tectorum does in the American West. This invasive species is called cheatgrass because it dries…
Rice feeds half the world. Climate change’s droughts and floods put it at risk
Under a midday summer sun in California’s Sacramento Valley, rice farmer Peter Rystrom walks across a dusty, barren plot of land, parched soil crunching beneath each step. In a typical…
Here’s the chemistry behind marijuana’s skunky scent
Scientists have finally sniffed out the molecules behind marijuana’s skunky aroma. The heady bouquet that wafts off of fresh weed is actually a cocktail of hundreds of fragrant compounds. The…
A well-known wildflower turns out to be a secret carnivore
Gleaming, gluey, deathtrap hairs have betrayed the secret identity of a well-known wildflower: It’s a carnivore. A species of false asphodel (Triantha occidentalis) uses enzyme-secreting hairs on its flowering stem…
Mammal brains may use the same circuits to control tongues and limbs
Precise control of the tongue is often vital in life, from the way frogs capture flies to human speech (SN: 1/31/17). But much remains unknown about how the brain controls…
Scientists remotely controlled the social behavior of mice with light
With the help of headsets and backpacks on mice, scientists are using light to switch nerve cells on and off in the rodents’ brains to probe the animals’ social behavior,…
How fossilization preserved a 310-million-year-old horseshoe crab’s brain
Paleontologists can spend years carefully splitting rocks in search of the perfect fossil. But with a 310-million-year-old horseshoe crab brain, nature did the work, breaking the fossil in just the…
