The archive was found by a direct descendant of Herman Matzinger, the doctor who performed McKinley's autopsy.

Newly Discovered Papers From President McKinley's Assassination Are for Sale

The archive belonged to Herman Matzinger, who performed the autopsy on the 25th president and conducted a bacteriological analysis to rule out the possibility of poison-tipped bullets

Western monarchs prefer to cluster in areas with little to no wind, high humidity, dappled sunlight and easy access to nectar-producing plants.

Monarch Butterflies Wintering in California Are Down 30 Percent From Last Year

The insects' population is slowly rebounding from a historic low in 2020, but they remain in crisis, having declined by more than 95 percent since the 1980s

Measuring 40 by 50 inches, The Schoolmistress (circa 1784) had belonged to physician Earl Leroy Wood. Officials returned it to his son, Francis Wood, on January 11.

Stolen by Mobsters 54 Years Ago, This 18th-Century Painting Was Just Returned to Its Rightful Owners

Authorities presented "The Schoolmistress" to 96-year-old Francis Wood, the owner’s son, last month

When researchers reviewed footage of flying insects, they saw that the bugs tilted their backs toward the source of artificial light.

Why Are Flying Insects 'Attracted' to Lights? Scientists May Finally Have an Answer

Moths and other insects might turn their backs toward the brightest source of light around—which has historically been the sky—to determine which way is up and which is down, according to a new paper

The Glen Affric tartan, which dates to the 16th century, on top of the newly recreated pattern

You Can Now Wear a Recreation of Scotland's Oldest Tartan

Fashion designers have created a fabric inspired by the Glen Affric tartan, which was discovered in a peat bog and dates to between 1500 and 1600

One possible explanation for the low-frequency noises? Mating black drum fish.

Mysterious Bass Sounds Irking Florida Residents Might Just Be Fish Mating Loudly

The Tampa community raised money to fund an investigation, and now, a local scientist will install underwater microphones to look for the source of the racket

Archaeologist and folklorist Billy Mag Fhloinn rediscovered the Altóir na Gréine, or the "Altar of the Sun," in Ireland.

Everyone Thought This 4,000-Year-Old Tomb Had Been Destroyed. Then, an Archaeologist Found It

Billy Mag Fhloinn located the Altóir na Gréine, thought to have vanished in the 19th century, in southwest Ireland

Researchers studied climate fluctuations in Roman Italy between 200 B.C.E. and 600 C.E.

Plagues That Ravaged the Roman Empire Were Linked to Periods of Cold Weather

The changing climate may have had ripple effects that made people more susceptible to disease, new research suggests

An expedition last fall captured a sonar image of a roughly plane-shaped object near Howland Island in the Pacific Ocean, which the team suggests could be Amelia Earhart's vehicle.

Have Researchers Found Amelia Earhart's Long-Lost Plane?

A new sonar image shows an airplane-shaped object resting on the bottom of the Pacific Ocean, not far from where Earhart and her navigator, Fred Noonan, went missing in 1937

African gray parrots are highly intelligent birds that can learn to closely mimic human voices.

These Parrots Won't Stop Swearing. Will They Learn to Behave—or Corrupt the Entire Flock?

A British zoo hopes the good manners of a larger group will rub off on the eight misbehaving birds

Emperor penguins are the largest penguins in the world, but they're at risk of disappearing because of human-caused climate change.

Scientists Discover Four New Emperor Penguin Colonies From Satellite Images of Antarctica

The findings are a rare bright spot for the birds, which scientists predict will be mostly extinct by 2100

Patrons drank less wine at bars and pubs in England that removed the largest serving size from their menus.

People Drink Less Wine When Bars Remove the Largest Glass, Study Finds

The simple change could help reduce alcohol consumption and improve health at the population level, U.K. researchers say

One side of the silver medal depicts Zeus holding Nike in the palm of his hand, while the other side features the Acropolis in Athens.

Winners Got Silver Medals at the First Modern Olympic Games in 1896

A rare example of the nearly 130-year-old silver medal just sold at auction for $112,000

The 7.46-carat brown diamond is about the size of a gumdrop.

French Tourist Finds 7.46-Carat Diamond at Arkansas State Park

Julien Navas plans to have the brown gem split into two pieces so he can give half to his fiancée and half to his daughter

Churchill's custom-made dentures helped him maintain his distinctive speaking style.

Winston Churchill Wore False Teeth to Deliver Historic Wartime Speeches. Now, They're for Sale

The British prime minister likely acquired the custom gold-mounted dentures around the beginning of World War II

This spring, Brood XIII and Brood XIX of periodical cicadas will emerge together for the first time since 1803.

Cicadas Are Coming: Rare 'Dual Emergence' Could Bring One Trillion of the Bugs This Year

The 13-year and 17-year broods that will emerge from underground this spring will be appearing together for the first time in 221 years

Turkey’s government hopes the new policies will help protect the 1,500-year-old landmark in Istanbul.

Hagia Sophia Introduces Entry Fee for Foreign Tourists

Worshippers will be able to use a separate entrance to gain free access to the 1,500-year-old landmark in Istanbul

Bottom trawling is a polarizing fishing practice that involves dragging heavy nets and equipment across the seafloor.

Seabed Trawling May Be Spewing Huge Amounts of CO2 Into the Atmosphere

New research suggests the controversial fishing method is also contributing to increased ocean acidification, which can harm marine wildlife

Chicago's Field Museum announced its decision to cover certain display cases several days before new federal regulations went into effect.

Field Museum Covers Native American Displays to Comply With New Regulations

The federal rules require museums to obtain consent from tribal leaders before displaying or researching cultural heritage items

The envelope was sent twice: once on May 2, 1840, and again on May 4, 1840.

First Known Piece of Mail Sent Using a Stamp Goes to Auction

The 183-year-old envelope is a rare example of two early forms of prepaid postage: Mulready envelopes and adhesive stamps

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