From today, drivers in New Zealand will only be allowed to use mobile phones in their cars if they use a hands-free kit or phone cradle.

The ban, and its timing, were officially confirmed in August. Mobile phones cannot be used, even while stopped at a red light, unless the phone is in a fixed cradle or a hands-free kit or headset is used. Those who break the rules face a fine of $80, and 20 demerit points.

A group of University of Otago academics went scavenging for empty cigarette packs in four cities and six towns.

All told, they collected 1310 binned packs. 45% of the scavenged ciggies were from Australia, and 16.7% were from China. Brands sold in 11 other countries completed the pile.

All up, 3.2% came from outside the country - meaning lost tax revenue for New Zealand.

From his team’s street sweep, lead researcher Dr Nick Wilson extrapolates that our government misses out on at least $36 million in lost tobacco tax and GST.

It’s party time in Rio de Janiero as the Brazilian city celebrates its selection, against the odds, as the venue for the 2016 Olympic Games, the first to be held in South America.

The International Olympic Committee made the decision in Copenhagen from three other contenders – Chicago, Tokyo and Madrid. The US city was the bookies’ favourite but was eliminated in the first round, followed by Tokyo and finally Madrid.

While industry and public opinion mean bakers don't have to add folic acid to bread for another few years, they have started adding iodine without any fuss.

Only organic and unleavened bread are excluded from using iodised salt.

Researchers have found that cash can dull physical pain as well as easing the burn of social rejection.

Because money can affect pain, the researchers theorised that it may offer clues as to how the brain evolved to process social interactions reports LiveScience.

The findings were detailed in the June issue of Psychological Science.

Boston researchers have developed special contact lenses that can gradually dispense a steady amount of medication to the eye at adjustable rates.

ScienceDaily reports the invention is a response to the problem of people taking eye drops multiple times a day, where because of blinking and tearing, as little as 1% to 7% of the dose is actually absorbed by the eye.