Our behaviour is far more selfish than we might like to believe.
Sao Paulo, Brazil, 2013. Subways abound in fine particles often carried by brakes or trains.
Diego Torres Silvestre/Flickr
Subways seem like the perfect solution to improve air quality in cities. But what about air quality underground?
Aedes Aegypti mosquitoes viewed through a microscope in Broward County, Florida, in June 2016.
AP Photo/Lynne Sladky
Vast amounts of standing water in Houston and other hurricane-flooded areas are dangerous not only because of toxins. The water is a dangerous breeding ground for mosquitoes that transmit Zika.
Picking up the pieces in Florida after Hurricane Irma.
AP Photo/Gerald Herbert
For the first time in years, Americans are acutely aware of the perils of extreme weather, but don't expect views on climate risks to shift overnight.
Cristobal Herrera / EPA
To deliver climate justice we must focus on vulnerable people not countries.
The Montreal Protocol is finally closing the hole in the ozone layer.
Using solar power could give the U.S. military some advantages – and more security.
Diane Durden/U.S. Marine Corps
US military bases usually get their electricity from the civilian grid, which is vulnerable to attack and to disaster. Solar-powered microgrids could protect national security, and would save money.
Bacteria cultured from a sample of air in a public building.
When jetting off on holiday, we rarely give a second thought to what microbes we might be taking with us. But humans spread trillions of bacteria around the globe, potentially harming ecosystems' balance.
“Snowball Earth” happened around 700 million years ago.
Earth's thermostat can fail spectacularly at times. Around 700 million years ago, huge volcanic eruptions triggered "Snowball Earth".
Colleen Burge counts oysters on an oyster aquaculture lease in California.
Oysters grow in seawater and filter their food from it, so how do you shield them from waterborne diseases? Scientists are working to develop strains that are resistant to a fast-spreading herpes virus.
Nuttawut Uttamaharad / shutterstock
Offshore wind is an expensive business to get into.
Flooding from Hurricane Harvey. Can the region rebuild infrastructure so that it can better withstand extreme weather events?
AP Photo/David J. Phillip
After extreme weather events like Hurricane Harvey, city planners need to think about the smartest way to rebuild. Here are some no-regrets infrastructure investment ideas.
Satellite image on Sept. 7, 2017 shows three hurricanes: Irma in the center just north of the island of Hispaniola, Katia on the left in the Gulf of Mexico and Jose in the Atlantic Ocean on the right.
NOAA via AP
What scientists know – and don't know – about the linkage between climate change and hurricanes.
Satellite view of Hurricane Irma.
The scale from one to five that is used to measure the destructive power of a hurricane may no longer be enough.
Plants make proteins based on whatever genetic material you give them.
Carl Davies, CSIRO
Inserting a random DNA mishmash into a plant or bacterium directs it to make a novel protein. Sifting through the resulting molecules, researchers may find ones have medical or agricultural uses.
A man hangs fish to dry on the western shore of Lake Turkana.
Ethiopia's GIBE III dam has been labelled the world's most controversial dam due to environmental and social impacts and the displacement of indigenous people.
It’s a long road to recovery.
After the storm is over, it's time to rebuild – and natural disasters can affect survivors' health for years to come.
Could the new invention spell the end of rooftop fans?
Christophe Finot/Wikimedia Commons
The invention of silver and plastic-clad roof panels that can cool themselves down even under the Sun's full glare promise to make air conditioning much more energy-efficient.
The Maputo Convention recognises traditional rights of local communities and indigenous knowledge.
After decolonisation and independence a new conservation document was needed, one that looks after the needs of the people. That's what the Maputo Convention aims to do.