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World's smallest reptile comfortably fits on your fingertip

Don’t be fooled by its size, though. This tiny chameleon is surprisingly gifted.

How long it takes to break a habit, according to science

Did you honestly expect a straightforward answer?

Why is the ocean blue?

It's all due to the physics of the scattering of light.

What function does the appendix serve?

Far from useless, the appendix is important for maintaining gut flora and supporting the immune system.

Age-related cognitive decline reversed in mice by fighting inflammation in the brain

Staying mentally sharp at old age may require blocking a certain receptor in brain cells.

AI-assisted test diagnoses prostate cancer from urine with almost 100% accuracy

The test only takes 20 minutes.

Ancient bronze rings and ribs were some of the earliest money

Before humans minted coins, they used all sorts of odd objects as standardized money.

How some male mantises avoid getting their heads chopped off after sex

Males employ sexual coercion in order to quickly mate and flee the scene in one piece.

The only preserved dinosaur butthole fossil is 'one-of-a-kind'

The dinosaur's cloaca helped it poop, have sex, and lay eggs.

Synthetic CBD kills gonorrhea, may provide first new antibiotic to resistant bacteria in 60 years

Some cannabis molecules seem effective at destroying certain bacterial strains in the lab.

Male butterflies ‘dibs’ their mates with a repulsive odor to ward off other suitors

The same anti-aphrodisiac is produced by some plants to attract butterflies. Despite the contradiction, the chemical signaling seems to work both ways.

Breastfed babies have better immune systems. Here's why

Researchers have found that a type of immune cell is more abundant in breastfed babies than formula-fed babies.

Scientists find amazing 5,000-year-old crystal dagger in Spain

This mythical-looking dagger may have played a symbolic role in prehistoric Iberian society.

What the Roman Empire looked like at its peak in one glorious map

The scale of the Roman Empire during its heyday was unprecedented in the Ancient World.

What are Cistercian numbers -- the forgotten ciphers of Medieval monks

A system of numerals that is written down like tic-tac-toe.

Dire wolves genes show they weren't really wolves

Dire wolves weren't the distant cousins of modern wolves as we've been led to believe all these years.

Autonomous robot swarm swims like a school of fish

These underwater robots operate as a collective artificial intelligence.

Ocean acidification may turn on the lights for some glow-in-the-dark species

Bioluminescence is much more common and important for marine life than most people think.

Astronomers found the oldest supermassive black hole -- and they were puzzled by it

The giant black hole formed just 670 million years after the Big Bang.

Scientists store information in DNA of living cells

‘Hello world… of bacteria?’

Hibernating cancer cells may explain relapse after chemotherapy

Cancer seems to have hijacked a survival mechanism employed by hibernating animals during times of high stress.

Rollable devices that turn phones into tablets or electronic scrolls are now here

Is this the dawn of a new era of flexible mobile devices?

Frequently asked questions about the coronavirus vaccine

Everything you wanted to know about the new coronavirus vaccines.

This snake turns into a 'lasso' to climb trees

Understanding the newly identified mode of locomotion is significant for bird conservation.

Megalodon gave birth to newborns as large as adult humans

The Megalodon babies likely ate unhatched eggs in their mother’s womb to come out on the hefty side.

Is the COVID-19 vaccine safe for pregnant women?

There's no data because clinical trials did not include pregnant or breastfeeding women. But here's what we know so far.

What's exactly inside the COVID-19 vaccines?

Sorry but there’s no microchips or luciferase, just safe and effective ingridients.

How long does COVID-19 vaccine immunity last?

Scientists don't know for sure at this stage of the pandemic, but there is evidence suggesting that current vaccines could offer ample protection.

What are the side effects of the vaccine for COVID-19?

All medication has side effects, and coronavirus vaccines are no exception. Severe reactions are very rare though!

Do I still need a vaccine even if I had COVID-19?

The upside of being sick with COVID-19 is that you're likely naturally immune now, but no one knows for sure how long this immunity lasts.

Just 1% of Brazilian day traders earn more than the minimum wage

Day trading is gambling, not investing, experts say.

Why you still need to wear a mask after getting a COVID-19 vaccine

Vaccines are here, but dangers still lurk.

Inside the quietest room in the world where you can hear your heartbeat and blood flow

It's a surreal experience but few can bear it for more than a few minutes.

7 brainy reasons why crows and ravens are the smartest birds in the world

Who you calling bird brain?

The Hidden World of Mathematics in The Simpsons

From pi to Mersenne primes, from Euler's equation to the unsolved riddle of P vs NP, The Simpsons is filled with hidden math gags.

Why Roman concrete is stronger than it ever was, while modern concrete decays

Concrete in some Roman piers is not only still viable today but stronger than it ever was. Its secret sauce? Seawater.

Venus may still be volcanically active

"If Venus is indeed active today, it would make a great place to visit," said researchers,

Musical hips: Doctors literally hear music while checking a patient's pulse

Quite possibly the weirdest ham radio flex in medical history.

The most adorable study of the year shows how dogs recognize each other

All study participants were good girls and boys.

57,000-year-old wolf pup mummy found in Yukon permafrost

The mummy may help scientists retrace the migrations of wolves across Europe, Asia, and North America.

These are some of the most awesome wildlife photos of 2020

A visual reminder of how beautiful and intriguing nature's creatures can be.

We probably aren't the first civilization in the Milky Way. It's just that the others are dead

A new study suggests that it is likely that other civilizations have existed before us in the Milky Way -- before they annihilated themselves.

Blood pressure drug also improves alcohol withdrawal symptoms

A drug with a long history for treating blood pressure and prostate problems is also affective against alcohol withdrawal.

Rare 'turtle tsunami' captured on film by conservationists

The giant South American river turtle takes 'safety in numbers' very seriously.

NASA says a gargantuan supermassive black hole is somehow missing

The hunt is on for black hole with up 100 billion solar masses that is nowhere to be found.

Breathtaking underwater photographs document the hidden lives of humpback whales

An Australian artist has captured graceful photos of humpbacks and compiled them to in a enchanting book.

Brain-eating amoeba infections expanding to Northern U.S.

Climate change may have contributed to the spread of infections in Kansas, Minnesota, Indiana, and other states farther north.

European rivers are fragmented by over one million barriers

Healthy rivers are flowing rivers, say researchers.

Human facial expressions may be universal across cultures, AI study found

Smiling at weddings and frowning at funerals seem to be natural across the world.

Mammoth remains possibly butchered by human hunters found on Arctic Island near Siberia

The 20,000-year-old remains of a mammoth bear signs of human hunting and butchery.

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