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

Smoke lingers following fires in the Brazilian Amazon rainforest in August 2020.

Humans Have Altered 97 Percent of Earth's Land Through Habitat and Species Loss

The study, which did not include Antarctica, also identified opportunities to restore up to 20 percent of land ecosystems

The largest pterosaurs had wingspans like small aircraft and longer necks than giraffes.

Unique Bone Structure Helped Long-Necked Pterosaurs Fly

Bicycle wheel-like spokes connected the vertebrae’s central column to its outer surface, offering serious strength

The rescue team named their giraffe-carrying vessel the "GiRaft."

Last Two Giraffes Rescued From a Disappearing Island in Kenya

The land mass was once a peninsula in Lake Baringo, but rising waters turned it into a muddy island

The Fukushima Daiichi nuclear power plant as seen from the coast of Futaba town in Fukushima prefecture.

Japan Will Release Fukushima Nuclear Plant Wastewater Into Ocean

Ten years after the Fukushima nuclear disaster, the site is running out of space to store tritium-containing wastewater

The object left a four-inch dent on the ground at a Washington farm.

After a Fiery Display, SpaceX Debris Landed on a Washington Farm

Officials are also investigating whether a cylindrical object that washed ashore in Oregon may also be from the SpaceX rocket booster

The 50-foot-wide racetrack used to study muons traveled by barge around Florida and up the Mississippi, and then by truck across Illinois.

New Measurements of Muons Might Rewrite Particle Physics

The gap between theoretical predictions and the experimental measurements isn’t a full-blown discovery yet

La Soufrière volcano erupted less than 24 hours after evacuation orders were given on Saint Vincent Island.

Evacuations Ongoing After 'Explosive Eruption' on Caribbean Island

Seismic activity on the island of St. Vincent prompted mandatory evacuations hours before the eruption started

A lightning-caused wildfire in 2013 creates white smoke rising from the tundra in front of the Baird Mountains.

Climate Change Linked to Increase in Arctic Lightning Strikes

A warming climate makes Arctic lightning possible, and resulting wildfires release immense amounts of carbon from the permafrost

Since mid-March, more than 30,000 tourists have visited the eruption site, which is just 20 miles from Iceland’s capital, Reykyavík.

New Fissure in Iceland Volcano Prompts Evacuation of Tourists

Scientists re-evaluated the safety of the eruption site after a new fissure began spewing steam and lava a half-mile from the original craters

Microscope image of an isolate from the first U.S. case of Covid-19. Viral particles are visible in blue.

WHO Releases Results of First Investigation Into the Origin of Covid-19

The virus was most likely first spread from a wild animal, possibly bats, to an unknown intermediate animal, possibly farm animals, and then to humans

The dolphins swam in the Grand Canal near St. Mark's Square, Venice's main public square

Dolphins Spotted in Venice's Grand Canal—for Real This Time

The coast guard and a rescue organization took about two hours to guide the cetaceans out of the canal

The new study compared 1,131 children between 12 and 15 years old who received two doses of the Pfizer-BioNTech vaccine, and 1,129 who received two doses of a placebo.

Pfizer-BioNTech Vaccine Is Highly Effective at Preventing Covid-19 Infections in Adolescents

In a study of 2,260 children age 12 to 15, no vaccinated kids contracted the virus

Astronaut Scott Kelly shown in October of 2010 in the Cupola of the International Space Station.

How Space Travel Shrank Astronaut Scott Kelly's Heart

While in orbit, the adaptable muscle doesn't need to combat gravity to pump blood

Nurse Sandra Lindsay of Long Island Jewish Medical Center in Queens, New York City, received the first Covid-19 vaccine in the United States in December 2020. Here, she is pictured receiving her second dose of the Pfizer vaccine in January.

CDC Study of Vaccinated Frontline Workers Shows Covid-19 Shots Effectively Prevent Infection, Not Just Symptoms

The vaccinated group of participants saw 90 percent fewer cases than if they had not been vaccinated

By the time sauteur d’Alfort rabbits are a few months old, they learn how to walk on their front paws to accommodate their uncoordinated back legs.

Thanks to a Genetic Mutation, These French Rabbits Prefer Handstands to Bunny Hops

The unusually acrobatic sauteur d’Alfort rabbits were first discovered in France in 1935

AstraZeneca's vaccine is approved for use in over 20 countries.

Why U.S. Approval of the AstraZeneca Covid-19 Vaccine Is Taking So Long

An unprecedented public exchange with a data review board is the latest of AstraZeneca-Oxford vaccine’s hurdles

The juvenile walrus spent two days resting in Pembrokeshire, Wales before returning to sea.

How Did This Walrus Get to Wales?

The same walrus might have stopped briefly in Denmark and Ireland

Seventeen-year-old Dasia Taylor was named one of 40 finalists in the Regeneron Science Talent Search, the country’s oldest and most prestigious science and math competition for high school seniors.

This High Schooler Invented Color-Changing Sutures to Detect Infection

After winning a state science fair and becoming a finalist in a national competition, Dasia Taylor now has her sights set on a patent

The southern African orchid Disa forficaria attracts male longhorn beetles.

Extremely Rare Orchid Tricks Horny Beetles Into Carrying Its Pollen

The flower found in southern Africa releases a chemical so irresistible to longhorn beetles that they attempt to mate with it

As they have gotten more comfortable with screen-time, the chimps have shown human-like behaviors like bringing over food like nuts to snack on as they watch.

Czech Chimpanzees Use Video Calls to Fight Lockdown Blues

Zookeepers at Safari Park Dvůr Králové and a zoo in Brno set up daily video calls for their chimpanzees

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