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Life

New evidence of early life on Earth date back 3.7 billion years

Scientists have discovered remains of 3.7-billion-year-old life, encapsulated within the oldest rocks in Greenland. It is one of the oldest signs of life on Earth.

Earth had oxygen 800 million years earlier than thought

The atmosphere contained oxygen 3.8 billion years ago, raising new questions about the history of life on Earth.

Surprisingly many women tested positive for drug use during pregnancy

A new study finds that many pregnant women tested positive for addictive drugs, begging the question, should pregnant women be routinely tested for drugs?

The Black Death has been hiding among us for thousands of years

Fossil DNA reveals that the plague is much older than previously suspected. The discovery could shed new light on the evolution of a deadly disease.

Light from distant galaxies can reveal extra-terrestrial life

Physicists can now trace light emitted by plants and microorganisms on planets far away.

Study: Altruism is in our genes

Choosing to be a blood donor is hereditary, shows new research. Reveals bigger truth about altruism.

Queues move faster if the last person is served first

Serving the last person to arrive in the queue could surprisingly cut waiting times, shows new research.

What is a dignified life?

The limits for when life is worth living are constantly changing. How long should we actually continue to treat a dementia patient who has lost the ability to speak and remember?

Collisions made early galaxies grow huge

The mystery of why massive galaxies existed in the early universe may now have been solved. New research shows that the galaxies were formed as a result of a collision of galaxies and the subsequent explosive formation of stars.

Even tiny oil spills may break Arctic food chain

Drilling for oil in the Arctic may have catastrophic consequences, new study suggests.