Average penis size revealed: Scientists attempt to find what is 'normal' to reassure concerned men.

Exploration of the solar system over the past year has produced exciting finds, writes Alan Duffy.

Twins Jayden and Xavier Boughey have to convince their classmates they're brothers.

It seems some of us have more holiday cheer than others, which raises the question about whether Christmas spirit actually exists.

In the year 2000, the CIA commissioned a report on what global trends will be in 2015. Here's what they got right and wrong.

SpaceX is heading back into orbit today - with an ambitious attempt to land its reusable rocket on land.

Your nearest psychopath might be your father-in-law, your boss, your financial adviser or even that guy your daughter is thinking about dating. Just who these people are, how many there are in our society and what helps them blend in are questions that have inspired a Waikato University researcher to launch a major project.

Your nearest psychopath might be your father-in-law, your boss, your financial adviser or even that guy your daughter is thinking about dating.

The fear of technology are not helped by a continuing epidemic of artificial intelligence (AI) and robophobic screenplays emanating from Hollywood.

Imposing minimum prices for alcohol is likely to help some people who are dependent on it to cut down their drinking, say the authors of a new study.

It's good news, but not a reason to be complacent; global emissions actually fell in 2015.

The average air temperature over Arctic land reached 2.3 degrees F (1.3 degrees C) above average for the year ending in September. That's the highest since observations began in 1900.

In the final days of the Paris talks, officials walked a diplomatic high wire as the pact's fortunes rose and fell.

The Super City's dormant volcanic field -- made up of more than 50 craters -- is expected to erupt again from a new site within the next few hundred years.

Laurent Fabius was directly involved with the bombing of the Rainbow Warrior, now he's the world's foremost climate negotiator.

Just thinking about death triggers odd behaviour, shows research.

As diplomats in Paris began one of their last days to ink a climate treaty, something symbolic took place on the Bloomberg Carbon Clock -- the real-time estimate of the atmosphere's CO2 level.

Two passionate members of the New Zealand Antarctic Society are bound for Antarctica today.

Scientists just can't agree on whether video games will save you or kill you.

Not every aspect of climate science is completely resolved, and here are five questions that are guaranteed to get the experts going.

A crack along the Antarctic ice is making its way towards an isolated research station, threatening to plunge the scientists into the frozen seas.

What happens when you bring together close to 200 nations for one of the most pivotal summits in history? Organised chaos.

There's growing optimism in Paris over reaching a landmark agreement to spare future generations the worst impacts of climate change.

The Government is being urged to back a more ambitious international goal of restricting global warming to 1.5C.

A study has proven what many men have long believed to be true.

Australia would support a UN review of restricting global warming to 1.5C, despite holding firm on a less ambitious goal.

Parents, we report, are being urged to read to their kids over the holidays, or ensure they keep reading, to maintain their mental development.

Scientists have demonstrated how robots can learn much like tots do.

Many of us grew up without them, but most of us can't imagine our lives free of computers and smartphones helping to make things faster, easier and more efficient.

Study finds that people who post inspirational quotes on Facebook and Twitter "have lower levels of intelligence".