Theresa Machemer

Theresa Machemer is a freelance writer based in Washington DC. Her work has also appeared in National Geographic and SciShow. Website: tkmach.com

A United Launch Alliance Atlas V rocket with NASA’s Mars 2020 Perseverance rover onboard launches from Space Launch Complex 41 at Cape Canaveral Air Force Station, Thursday, July 30, 2020, from NASA’s Kennedy Space Center in Florida.

Here Are Three Things the Perseverence Rover Will Do When It Gets to Mars

NASA's newest space robot will build on the goals of previous missions to find out whether life ever existed on the Red Planet

93-year-old Vera recreates Adele's 21 album cover.

Nursing Home Residents Recreate Iconic Album Covers During Lockdown

Seniors in the U.K. staged photoshoots inspired by Elvis Presley, Madonna, David Bowie and other musicians

Empathy goes further than shame when it comes to convincing people to change their behavior, according to public health experts.

Why 'Pandemic Shaming' Is Bad for Public Health

Empathy may go further than annoyance when encouraging people to change their risky behavior

Scientists have isolated the gene the makes the Australian fruit immune to a devastating disease plaguing American citrus.

How the Australian Finger Lime Could Save American Citrus

Scientists found the gene that makes finger limes impervious to a disease turning oranges green and bitter

The 22-bedroom County Wexford estate sits on 63 acres of land.

You Could Be the Next Owner of Ireland's 'Most Haunted House'

Local legend claims that the devil visited Loftus Hall, now on sale for $2.87 million, during the 18th century

Mathematically speaking, the honeycombs grow like crystals.

Scientists Crack the Mathematical Mystery of Stingless Bees' Spiral Honeycombs

The waxy architectural wonders seem to grow like crystals

Olivia de Havilland's 1943 legal victory against Warner Bros. contributed to the downfall of the Hollywood studio system.

Olivia de Havilland, Star of Hollywood's Golden Age, Dies at 104

The actress is perhaps best known for her portrayal of Melanie Hamilton in "Gone With the Wind"

The Crocodylus checchiai skull analyzed in the new paper came from an approximately 10-foot-long reptile.

New Evidence Suggests Ancient Crocodiles Swam From Africa to America

The prehistoric reptiles would have gotten some help from ocean currents

Bruno Dey, a former SS watchman at the Stutthof concentration camp, hides his face behind a folder as he arrives for a hearing in his trial on July 23.

Former Nazi Concentration Camp Guard Convicted as Accessory in 5,230 Murders

Defendant Bruce Dey, now 93, oversaw prisoners at Stutthof in Poland from August 1944 to April 1945

Chicago-based publisher Haymarket Books will launch the reimagined London tube map next International Women’s Day, March 8, 2021.

A New London Tube Map Will Highlight Women and Nonbinary People

Co-organizers Emma Watson and Reni Eddo-Lodge drew inspiration from a 2016 project centered on the New York City subway

Curators at the Science and Industry Museum are unsure what purpose this object, crudely cast with a copper-based alloy, served.

Can You Help Identify This Museum's Mystery Artifacts?

A Manchester-based science institution has a backlog of unusual objects in need of classification

An MTA worker in New York sprays disinfectant in a subway car in May.

Will Mass Transit Recover From the Pandemic?

Financial losses from low ridership and unexpectedly low sales tax revenue threaten the future of public transportation

Frans Snyders' Fruit Stall features a vast spread of produce from the 17th century.

Centuries-Old Paintings Help Researchers Track Food Evolution

Art inadvertently documents the domestication of carrots, wheat, watermelon and other culinary delights

All grizzly bears in the United States are considered "threatened" under the Endangered Species Act and cannot be hunted, a federal appeals court ruled this month.

Protections for Grizzlies in the Greater Yellowstone Area Upheld in Court

For over a decade, the protected status of grizzly bears under the Endangered Species Act has been under fire

The top fish is a Russian sturgeon and the bottom is an American paddlefish. In between, two varieties of hybrid 'sturddlefish' created by accident.

Scientists Accidentally Bred a School of 'Sturddlefish'

Researchers mixed paddlefish sperm with sturgeon eggs because the fish seemed too dissimilar to form a hybrid

The Renaissance artist died in 1520 at age 37.

New Research Suggests Bloodletting, Pneumonia Killed Raphael

The artist failed to disclose his late-night outings to physicians, leading them to misdiagnose his illness

Users can zoom in on different sections of the quilt or search for specific panels by inputting names and keywords.

You Can Now Explore All 48,000 Panels of the AIDS Memorial Quilt Online

The commemorative quilt weighs 54 tons and spans 1.2 million square feet

Doritos are cake.

Why It's Unsettling That Anything Could Be Cake, According to Science

Psychologists explain why the disconnect between expectations and reality is both amusing and uncomfortable

According to Getty: Photographed in July 2018, this view looking south at Herbert Lake, Banff National Park, Alberta, shows the Milky Way over Mount Temple and the peaks of the Continental Divide. To the left in the clouds, Mars is hiding. Then Jupiter flanks the Milky Way on the right, while Saturn sits within the Milky Way.

How to See Five Planets in the Night Sky This Weekend

Mercury, Venus, Mars, Jupiter and Saturn will be visible during the early morning hours on July 19

Wall art dated to around 1900 B.C. shows visitors to Egypt wearing colorful robes distinct from the white clothing worn by locals.

New Research Reveals Surprising Origins of Egypt's Hyksos Dynasty

An analysis of ancient tooth enamel suggests the enigmatic ancients were immigrants, not invaders

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