Limit to human life may be 115 (ish)

Human life spans may be limited to a maximum of about 115 years, claim US scientists

Life expectancy has been increasing relentlessly since the nineteenth century - due to vaccines, safer childbirth and tackling killers like cancer and heart disease.

But can that go on forever?

The data showed increases in life expectancy were slowing in centenarians and that the maximum age of death had plateaued for at least two decades.

Prof Jan Vijg, one of the researchers from the Albert Einstein College of Medicinesao the BBC News website: "In people over 105 we make very little progress, that tells you we are most likely approaching the limit to human life.

"For the first time in history we've been able to see this, it looks like the maximum life span - this ceiling, this barrier - is about 115.

The crop of centenarians in the study were affected by malnutrition and infectious diseases in their childhood back in the late 19th Century. Remember smallpox was declared eradicated only in 1980.

The 115-year claim is too much for Prof James Vaupel, the director of the Max Planck Institute for Demographic Research.

He described the study as a dismal travesty and said scientists had in the past claimed the limit was 65, 85 and 105 only to be proven wrong over and over again.

He said: "In this sorry saga, those convinced that there are looming limits did not apply demography and statistics to test hypotheses about lifespan limits—instead they exploited rhetoric, deficient methods and pretty graphics to attempt to prove their gut feelings.

What happens to our bodies half a century or more later - at ages we have never reached in our evolutionary history - are a side-effect of the instructions in our DNA that are important in youth.

So any attempt to really increase lifespan will need an approach that goes beyond treating diseases and tackles ageing inside every cell of the body.

COP21: Rallies call for Paris climate change action

Last yearHundreds of thousands of people have marched worldwide to demand action to stop climate change but one protest in Paris was marred by violence, I realized now a days of that becaue this year on second batxillerat we are studying geography and that it's our first project, so when I read that new I was really interested. 
More than 2,000 events took place globally on the eve of a UN summit in the French capital.
In Paris, police fired tear gas at a large group of demonstrators gathering in the Place de la Republique.
They were apparently protesting against France's state of emergency, and have been disowned by the main organisers.
President Francois Hollande said it was "scandalous" that the clashes happened "where flowers and candles have been left in memory of those who were killed by the terrorists' bullets".
He added that the clashes had "nothing to do with those who protect the environment".
Nicholas Haeringer, of the campaign group 350.org,  said protests should still be allowed to continue, adding that campaigners would "stand against any attempts by the French authorities to use the incidents this afternoon to unnecessarily clamp down on civil liberties".
Earlier, a human chain was formed by hundreds linking arms in Paris along the 3km (1.9 miles) route of a march that was called off after the 13 November attacks.
A gap in the chain was left in front of the Bataclan concert hall, where 89 people were killed.
Hundreds of pairs of shoes were left on Place de la Republique to remember those left frustrated in their plans to march.
Activists want action to limit the rise in the average global temperature to 2C (3.6F) above pre-industrial levels.