New blood test could pick up Alzheimer's disease years before symptoms show.

Scientists have gained important insights into the role of an influential molecule.

COMMENT: Much of what determines happiness is outside of our control.

Even bacteria have memories - and learning how could help us fight superbugs in future.

COMMENT: Do teenagers spend too much time on their screens?

Fossil find in Israel indicates modern humans may have left Africa earlier than thought.

COMMENT: Volunteers who slept more ate on average 10g less per day of free sugars.

Crawling babies kick up clouds of "biogunk" - but that's not necessarily a bad thing.

Ridding NZ of rats and possums will be good for us, as well as our prized native wildlife.

What could DNA preserved in residents of Indonesian villages mean for NZ? Quite a lot.

Here's one relative you're probably glad didn't pop round for Christmas.

COMMENT: Something called blockchain could transform how our information is stored.

This genetics-based dating app promises to find you the perfect partner.

Study targeting Maori and Pacific kids could lead to better treatment for killer disease.

Excessive exposure to UV radiation will burn the skin and can lead to skin cancer.

In our Science Made Simple series, we talk to top microbiologist Dr Heather Hendrickson.

Confused about sunscreen controversy? Dr Sharad Paul explains what you need to know.

Why do men and women suffer stress differently? Brain researchers aim to solve the puzzle.

A young researcher is unravelling what could prove a crucial part of Alzheimer's disease.

From rockets and earthquakes to weather chaos, here are the top science stories of 2017.

Data analysis and ancient artefacts offer fresh insights into NZ's pre-European history.

NZ-led team find what could be vital clue to treating Huntington's Disease for first time.

COMMENT: For baby's brain to benefit, read the right books at the right time.

New Zealand isn't prepared enough for the next big pandemic, public health experts argue.

There's a new twist to the perennial argument about which is smarter, cats or dogs.

Do we have to accept what we've got when it comes to sensory perception?

Is not buying into conspiracy theories simply a matter of cognitive ability? Not so.

The twins are now so close that scientists are watching their every move.

As a person's life comes to an end, experts reveal the trauma of the "existential slap".

OPINION: Lack of sleep could have serious consequences.