Sucking on your baby’s pacifier may protect them from allergies

Many parents do this without much thought — but they may be on to something.

Killer whales display personality traits such as playfulness, cheerfulness and affection — just like humans or chimps

They are really smart creatures.

New tech transforms human poop into clean biofuel

Sanitation and energy generation in one go.

Dry irony: first rain in centuries causes extinction of Atacama Desert microbes

This also means that resurfaced liquid water on Mars might kill any hypothetical surviving microbes.

‘Oumuamua, our first interstellar visitor, is actually smaller than we thought

The small asteroid also seems to be emanating streams of gas that may explain why it was moving faster than it was supposed to.

Scientists find huge 19-mile impact crater under Greenland’s ice sheet

A meteorite might have slammed into the island as early as 12,000 years ago.

Pain, the self-fulfilling prophecy: When we expect something to hurt, it does

Mind over body.

How people use music as a sleeping aid

Music is free and doesn’t have negative side effects, unlike sleeping aid drugs.

The Earth is smack in the middle of a ‘dark matter hurricane’

And this could prove the perfect opportunity to identify the elusive form of matter.

Purple bacteria turns sewage waste into clean energy

We’re flushing valuable untapped energy down the toilet.

Dinosaur-aged birds had modern flying skills

A new study deepens the mystery of avian extinction following the asteroid impact that wiped out the dinosaurs.

Ancient Gauls embalmed heads of enemies as trophies more than 2,000 years ago

New research is confirming historical texts and artifacts, suggesting a gruesome practice.

‘Quantum compass’ can locate objects without GPS

The device is completely self-contained, being able to determine the position of an object on the globe with no external reference required.

Scientists turn Opportunity’s 5,000th Martian sunrise into music

When science meets art.

Scientists create bionic mushroom that generates electricity out of microbes

What do you get when you 3-D print cyanobacteria onto button mushrooms?

Ancient DNA reveals two previously unknown migrations into South America

We’re beginning to understand who were the first Americans in greater detail.

Human lifespan is increasing with every generation, new study finds

Today, people can expect to live six years longer than their grandparents, on average.

To avoid shortsightedness, children should spend more time outdoors

Scientists have identified new factors that contribute to myopia. Spending more time outside is still the best thing a child can do to cut back the risks.

Vaccine might allow Celiac disease patients to eat gluten

It’s no cure but the treatment could finally allow people with celiac to eat gluten.

Supermassive black hole pairs imaged in merging galactic cores

The same should happen six billion years from now when the Milky Way merges with Andromeda.