Turtles can’t head south for the winter, so they hibernate in rivers, lakes and ponds.
Crisp temperatures, ice-capped ponds and frozen landscapes send animals scurrying for cover. But just what do turtles do when winter takes hold?
Burned area in Santa Rosa, California, Oct. 11, 2017.
US Department of Defense
Fire is part of the ecology in much of California, but recent wildfires have caused much more damage than past burns of similar size. A fire ecologist points to two key factors: winds and population growth.
Bangalore has a long lasting love history with nature.
The population of India's IT hub, Bangalore, grew for centuries because of nature, not despite it – a lesson that could give hope for the future of our modern cities.
Banded stilts gather to nest and raise chicks at desert salt lakes.
A new study gives insight into the strange breeding behaviour of banded stilts. These water birds fly thousand of kilometres to nest in temporary desert salt lakes.
A fire recently tore through an Italian memorial to Mussolini made of trees.
A forest that is also a disturbing memorial to Mussolini recently burned down.
This Auroch skeleton from Denmark dates to around 7,500BC. The circles indicate where the animal was wounded by arrows.
Bringing back aurochs is a competitive and ambitious venture aiming at recreating wilderness in Europe. But ethical and scientific questions linger.
Unlike napalm, which immediately scalded its victims, Agent Orange kills and maims slowly over time, its effects passed down through generations.
U.S. Army Operations in Vietnam R.W. Trewyn, Ph.D/Wikimedia
The use of Agent Orange in Vietnam had deep impacts, including a poisoned water supply, birth defects and cancer. Despite decades of attempted litigation, justice for spraying victims seems unlikely.
A brown bear snags a sockeye salmon in Alaska. In warm years, red elderberries ripen early and Kodiak bears leave streams full of salmon to eat them.
Climate change is making berries ripen early in Kodiak, Alaska, luring bears away from eating salmon. This shift may not hurt the bears, but could have far-reaching impacts on surrounding forests.
A drain carries water but does little else, but imagine how different the neighbourhood would be if the drain could be transformed into a living stream.
Drains take up precious but inaccessible open space in our cities. Converting these to living streams running through the suburbs could make for healthier places in multiple ways.
It was all the apple’s fault: we’ve been fascinated by poisoned fruit for a long time.
Jacob Jordaens (1593–1678), The Fall of Man, via Wikimedia Commons
Plants produce toxic fruit for everything from deterring fungi to causing constipation.
Mumbai rains flooded the city for a week, leaving thousands helpless while building collapsed killing dozens on August 31th.
PUNIT PARANJPE / AFP
Flooding in India's main financial hub is a reminder that urban growth has to work with nature.
Leaf sizes vary according to a complex mix of temperature and water.
Some leaves are millimetres across, and others are a metre square. An international study has found the essential factors controlling leaf variations.
Eugenia uniflora (flowers and young red leaves) a native Brazilian species, now invasive in Hawaii.
Forest & Kim Starr/Wikimedia
For mapping patterns of plant invasion from the sky, understanding plant behaviour on the ground and using it along with remote sensing cameras, is crucial.
Hey, what about us? Whale shark (spotted) and manta ray, a close shark relative.
As the Discovery Channel and National Geographic Wild unleash a week of dueling shark programs, a biologist advises viewers to take what they see with a large grain of sea salt.
Pond life can recolonise from seeds and eggs which lie dormant in the soil.
KobchaiMa / shutterstock
The planet has seen five 'mass extinctions' over the past half billion years, but each was followed by an explosion in biodiversity.
The Bronx River will never be the way it used to be, but it sure looks a lot better today than it did 20 years ago.
We can't return degraded landscapes to their original state but we can change the way people relate to their local environments.
The High Line in New York City, a former elevated railroad trestle converted to a public park.
In an urbanizing world, people increasingly are seeking out nature in cities. Research shows that diverse species of animals, plants and insects can thrive in areas that humans have altered.
A National Park Service staffer applies herbicide to invasive honeysuckle along the Natchez Trace Parkway.
Most of the earthworms in the US Northeast and upper Midwest are nonnative species. Scientists are finding increasing evidence that invasive worms and invasive plants may help each other.
Partula snails were driven to extinction in the wild by introduced predators.
Before we decide to eradicate or control an invasive species, like carp, we need plenty of scientific evidence and independent assessments first.