Stories by Megan Gannon

Remote-sensing studies have revealed the ancient settlements in southern Mexico

Ripple effects from massive aerial raids include disturbances in Earth’s ionosphere

A wildfire in summer 2017 deposited heat-absorbing black carbon on the imperiled ice sheet  

Fresh insights are emerging from studying the "microsociety" onboard the International Space Station

The premature deployment or jettisoning of its heat shield and parachute may have doomed the Schiaparelli lander

The sturdy oak ship was originally built for the Norwegian polar explorer Roald Amundsen, the first human to arrive at the South Pole

A deliberate collision with a comet brought the historic space mission to an end

Scientists used satellite images to monitor pyramids, tombs and buried cities from 2002 to 2013

Racial categories are weak proxies for genetic diversity and need to be phased out 

A clay tablet with cuneiform characters may contain a mathematical technique that was believed to be invented 1,400 years later

An odor scientist and engineer knows how to snuff out bad aromas

Christina Warinner scrapes the plaque off ancient teeth to learn more about our ancestors’ health

"She was a constant shining smile over the years every time our paths crossed," tweeted her co-star William Shatner (Captain Kirk)

The optimal length to keep eyes wet is a third of the width of the eye 

The fossils, more than 160 million years old, preserve a tree-climber and a tunnel-digger that lived alongside the dinosaurs

Humanity's failure to reduce global nuclear arsenals as well as climate change prompted the Bulletin of the Atomic Scientists to advance their warning about our proximity to a potentially civilization-ending catastrophe 

Two Swiss pilots will attempt a record-setting flight around the world without using any fuel. Stops will include Oman, India, Myanmar, 2 cities in China and 4 U.S. sites

"Everybody dies, and every ship sinks" is the abbreviated story of the battle in which the Huis de Kreuningen was lost. Archaeologists believe they've now found it

Orbital Sciences' unmanned Cygnus spacecraft is set to blast off atop an Antares rocket at 6:22 pm EDT from a NASA facility in Virginia

Heath and Human Services has added four new substances, including a cleaning solvent and a wood preservative mixture, to its list of cancer-causing substances

CDC officials say doctors clearly miss opportunities to vaccinate teens at the same time that other standard immunizations are administered

The new images may be early attempts to restore the Cambodian temple's decorations or simply old graffiti

Shat was honored for his "outstanding generosity and dedication to inspiring new generations of explorers around the world"