Feeds

One fifth of humanity deprived of Milky Way

None more black light

  • alert
  • submit to reddit

3 Big data security analytics techniques

One-fifth of the world's population is deprived of the pleasure of viewing the Milky Way in all its splendour - thanks, you guessed it, to light pollution.

However, this for once is not a case of developing world citizens yet again being sold short, because the light-out specifically affects "two thirds of the US population and one half of the European Union population", with Blighty figuring large among the total 20 per cent worldwide who are sine Via Lactea.

That's according to Connie Walker, an astronomer from the US National Optical Astronomy Observatory in Tucson, Arizona, who used figures from various sources including the public-participation Globe at Night project to arrive at her conclusion.

She lamented: "The arc of the Milky Way seen from a truly dark location is part of our planet's natural heritage."

To give an idea of the scale of the problem, Walker specifically found that "cities using light fixtures that direct just 3 per cent of their light upwards can almost double the sky glow experienced by astronomical observatories 100 km away".

She elaborated: "Allowing 10 per cent direct uplight increases this figure to 570 per cent."

Walker is chair of the US Dark Skies Working Group, part of the Dark Skies Awareness program, described by Cosmos Online as "a global citizen science effort to raise awareness of light pollution".

She said: "The point of raising awareness of light pollution is that it touches many areas of people's lives, from simply not being able to see the natural heritage of a starry night sky to affecting... the habits of animals, energy consumption, economic resources, and astronomical research."

In case you're thinking that light pollution is nothing more than an inconvenience for astronomers and city-bound skygazers, Walker cited a 2008 study of 147 Israeli communities, published in journal Chronobiology International, which "found some evidence for an increased risk of breast cancer for women living in areas with the most light pollution".

This was believed to be linked to "unnatural light at night affecting levels of hormones such as melatonin and estrogen". ®

Top three mobile application threats

More from The Register

next story
So, just how do you say 'the mutt's nuts' in French?
Vital linguistic question interrupts LOHAN spaceplane mission
95 floors in 43 SECONDS: Hitachi's new ultra-high-speed lift
Guangzhou skyscraper denizens to hold on to hats
Most Americans doubt Big Bang, not too sure about evolution, climate change – survey
Science no match for religion, politics, business interests
KILLER SPONGES menacing California coastline
Surfers are safe, crustaceans less so
Discovery time for 200m WONDER MATERIALS shaved from 4 MILLENNIA... to 4 years
Alloy, Alloy: Boffins in speed-classification breakthrough
LOHAN and the amazing technicolor spaceplane
Our Vulture 2 livery is wrapped, and it's les noix du mutt
Liftoff! SpaceX Falcon 9 lifts Dragon on third resupply mission to ISS
SpaceX snaps smartly into one-second launch window
STEALTHY NANOROBOTS dress up as viruses, prepare to sneak into YOUR BODY
Cloaking techniques nicked from viruses tackle roadblocks on way to medical frontier
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.