Lake Powell, photographed April 12, 2017. The white ‘bathtub ring’ at the cliff base indicates how much higher the lake reached at its peak, nearly 100 feet above the current level.
The Colorado River supplies water to millions of people and irrigates thousands of miles of farmland. New research warns that climate change is likely to magnify droughts in the Colorado Basin.
Wives sometimes chide their husbands for being cold or distant toward their sons. But men express their love in subtle ways that deserve to be honored rather than belittled.
Des réfugiés burundais sur les rives du Tanganyika en mai 2015.
C’est l’un des plus vieux lacs de la planète, unique pour sa biodiversité. Il nourrit des millions d’Africains mais les activités humaines menacent plus que jamais son équilibre.
Data from what we download and listen to can now be mined to create and promote future songs.
'Music Men' via www.shutterstock.com
Does musical taste even matter anymore? Or does a data-driven feedback loop – where what you enjoy in the past shapes what you hear today – influence what you'll like in the future?
The declining fishing yield in the Lake Tanganyika region is being exacerbated by an influx of refugees.
Climate change, deforestation, overfishing and hydrocarbon exploitation threatens one of Africa's oldest lake's, Lake Tanganyika.
Ready to serve.
Google search page via shutterstock.com
When a search query is loaded with implicit false assumptions, Google's results don't always promote the truth.
From the comfort of home, an activist shares an online petition.
AP Photo/Federica De Caria
Much social good can come from mass involvement – and research shows that includes online activism. The bigger picture takes in all those people who care but are at risk of doing nothing.
More is less in the world of research publications.
Desktop image via www.shutterstock.com.
The traditional mode of publishing scientific research faces much criticism – primarily for being too slow and sometimes shoddily done. Maybe fewer publications of higher quality is the way forward.
How can justice be blind to race?
Criminal justice experts suggest one way to change the system to eliminate racial bias.
Azteca ants, unsung heroes of coffee pest control.
Azteca ants are self-appointed protectors of coffee plants on Mexican plantations. But they have a lot to contend with from other insects.
Higher carbon dioxide levels will not result in faster-growing forests – just the opposite in many places, study finds.
Study using tree ring data and climate projections shows that buildup of CO2 will not benefit most northern forests and that growth rates will actually fall.
Members of the Senegalese anti-government youth movement Y'en a Marre (We’re Fed Up), in Dakar.
US President Barack Obama would do well to refocus America's interventions in Africa to support peaceful activists fighting for democracy.
Researchers compared the shipwreck history to tree ring data from slash pines to piece together the hurricane history over past centuries.
In an attempt to better understand hurricanes, researchers recreate hundreds of years of hurricane records with Spanish shipwreck logs and tree ring data.
A sculpture of Ghana’s founding father in the Kwame Nkrumah Memorial Park in Accra, Ghana.
Ghana has often been depicted as one of modern Africa's success stories. But how different is contemporary Ghana to the vision its founding father Kwame Nkrumah had?
20 tons of Ohara E6 borosilicate glass being loaded onto the mold of one of the GMT’s mirrors.
Ray Bertram, Steward Observatory
The laws of physics dictate that to pick out ever fainter objects from space and see them more sharply, we're going to need a bigger telescope. And that means we need massive mirrors.
Smoky, almost irreverent.
To understand why insects sting and why the stings of such tiny animals hurt so much, we first needed a way to measure the pain they cause. So I created a sting pain index.
Why do we trust people with power (other than politicians)?
Rational actor theories suggest the powerless should be reluctant to trust the powerful, but studies show we tend to do just that.
Comparison of Sierra Nevada snowpack in 2015 v 2010.
According to scientists, tree-ring analysis shows that California drought is the worst it has been in 500 years.The study underscores the severity of current drought and the challenges of future water management in the state.
They have family values too
Not so long ago, I sat across the table from Teresa, age 25, in a migrant shelter right across the border from Nogales Arizona, her tired face glimmered through the veil of tears as she described her experience…
The author posing with a fully-functional model of the Curiosity rover on Earth, not Mars.
“All systems go!” I said cautiously with a long sigh of relief. I had approved plans for the first soil analysis that would give humankind clues to the past and future habitability of Mars. One small word…