Radiation on Mars trip near lifetime limit

Astronauts are hit with gamma rays and solar flares. Photo: AP

Astronauts who travel on future missions to Mars would likely be exposed to their lifetime limit of radiation during the trip, not to mention time spent on the Red Planet, scientists said.

Sunday, 2 June, 2013, 2:44am

Tepco faces US$2b lawsuit as more US soldiers join action for Fukushima exposure

Japan's PM Shinzo Abe tours the emergency operation centre of the crippled Fukushima Dai-ichi nuclear power plant in Okuma. Photo: Reuters

Tokyo Electric Power's bill for its Fukushima nuclear disaster may swell as more United States military personnel join a lawsuit charging the utility with lying about radiation levels they faced while assisting relief efforts after Japan's 2011 earthquake and tsunami disaster.

11 Jun 2015 - 3:58pm

Mobile phone radiation: it's better to be safe than sorry

Pong's case claims to reduce exposure to cellphone radiation.

The second volume of a report that detailed the history of technologies later found to be harmful has sparked discussion over the possibility that mobile phones have cancer-causing radiation.

11 Mar 2013 - 10:37am 1 comment

Cosmic rays are last gasp of dying stars: scientists

A classic supernova remnant. Cosmic gravestones like this continue to emit radiation over vast distances through space. Photo: AFP

Though ubiquitous, the origin of cosmic rays has never been pinned down. Scientists have suggested that they could either come from the remains of supernovae, which are the violent explosions that mark the death of the biggest stars, or they could be particles accelerated by black holes somewhere outside our galaxy.

17 Feb 2013 - 3:28am

Japan's fish still radioactive from Fukushima nuclear disaster

Brokers check fish at the Hirakata Fish Market in Kitaibaraki, where contamination is still a huge concern. Photo: AFP

As the sun comes up over Tokyo's Tsukiji fish market, it is business as usual. Cranes are lifting the carcasses of rime-covered tuna from the holds of battered fishing boats.

11 Jun 2015 - 3:56pm

Thyroid growths found on Fukushima children

A study on children in Fukushima prefecture has found that nearly 36 per cent have abnormal growths on their thyroids, although doctors say there is no link between the 'cluster' of cases and the disaster at the Fukushima Daiichi nuclear plant in March last year.

19 Jul 2012 - 12:00am

A safer alternative to the risks of X-rays

Using ultrasound imaging to diagnose scoliosis - curvature of the spine - is a radiation-free alternative to traditional X-rays.

10 Jun 2012 - 12:00am

Japan's food exporters tell us why we can breathe easy

Is Hong Kong's air pollution a bigger health threat than last year's radiation leakage from the Fukushima Daiichi nuclear plant? That was the question posed at a recent dinner held in Hong Kong to convince the public that food from Japan is free from radiation and safe for consumption.

29 Mar 2012 - 12:00am

The story behind nuclear power

Nuclear power has been in the news a lot this year.

The Fukushima Daiichi disaster, where reactors melted down and released radioactivity, made many people question the future of nuclear power.

This year also marked the 25th anniversary of the Chernobyl disaster in Russia, when an explosion released a huge amount of radiation into the air.

21 Dec 2011 - 12:00am

Science is for everyone

The Hong Kong leg of the global competition, FameLab, will hold its final round on Saturday at the Science Museum. Only one of the seven finalists will win the chance to represent the city to talk about science in Britain under the Science Alive programme, co-organised by the British Council. Our junior reporters, Tam Sum-sze and Winnie Lee Wing-yee, got a sneak peek at their preparations.

16 Nov 2011 - 12:00am

Shenzhen X-ray scanners in subway radiation scare

Nearly 300 X-ray luggage scanners installed at Shenzhen underground stations in June have violated the mainland's radiation regulations and could increase cancer risks for children and pregnant women sensitive to radiation, local media reported yesterday.

11 Oct 2011 - 12:00am

The WOW factor

Time-saving from Shu

2 Oct 2011 - 12:00am

Crippled for life but still full of fight

Seventeen years ago, Song Xuewen graduated from a technical school and had just started his career as a pipeline repairman at a chemical factory in Jilin province. It was an enviable job. But Song's plans took a devastating turn upon his arrival at work one day when a seemingly innocent find resulted in severe radiation poisoning that left him crippled for life.

4 Sep 2011 - 12:00am

Everything under the sun to protect your skin

Sun exposure is the most preventable risk factor for all skin cancers and skin ageing, according to Dr Kingsley Chan Hau-ngai, a dermatologist at Quality HealthCare. It is therefore important to be sun-smart while enjoying your day out. Here are Chan's top tips.

Wear sunscreen at all times

31 May 2011 - 12:00am

Observatory says radioactive dust levels safe

The Hong Kong Observatory detected radioactive dust from Fukushima in Hong Kong, but levels had been extremely low, it said yesterday.

The observatory rejected suggestions it had delayed releasing the results, saying it needed time to verify the samples collected four days ago before making the data public.

30 Mar 2011 - 12:00am