Earth
- Environment
Tuna mercury rising
From 1998 to 2008, mercury levels in Hawaiian Yellowfin tuna have increased by 3.8 percent per year, researchers suggest.
- Climate
Warming Arctic will let Atlantic and Pacific fish mix
The ultra-cold, ice-covered Arctic Ocean has kept fish species from the Atlantic and Pacific separate for more than a million years — but global warming is changing that.
- Earth
‘Island on Fire’ recounts enormous 18th century eruption
The 18th century eruption of Iceland’s Laki volcano spewed sulfurous gases that briefly cooled the globe and probably contributed to the early deaths of tens of thousands of people.
- Climate
Central American fires may intensify U.S. tornadoes
Smoke originating from Central American fires may strengthen U.S. tornadoes.
- Agriculture
Superbugs take flight from cattle farms
Winds can carry antibiotics and drug-resistant bacteria from cattle farms to downwind communities.
- Climate
The continental divide of 2014 temperature
According to data from NASA and NOAA, 2014 was one of the hottest years on record — in some states.
- Climate
Warming could nearly double rate of severe La Niña events
Changing climate in the western Pacific could roughly double the frequency of severe La Niña events that cause extreme weather shifts across the globe.
- Environment
Atrazine’s path to cancer possibly clarified
Scientists have identified a cellular button that the controversial herbicide atrazine presses to promote tumor development.
- Climate
2014 was Earth’s warmest year on record
Record-hot 2014 marks the 38th consecutive year of temperatures above the 20th century’s average.
- Earth
Faulty thermometers exaggerated western U.S. mountain warming
Defective thermometers used in snowpack and ecology research overstated warming in western U.S. mountains.
- Environment
More toxic chemicals found in oil and gas wastewater
High levels of ammonium and iodide found in wastewater from oil and gas exploration can harm aquatic life and form dangerous byproducts in tap water.
- Neuroscience
Feedback
Readers discuss volcanoes and brain studies involving chocolate, and recommend some science-based options for game night.
