A new scientific study concludes that changes in the Sun's output cannot be causing modern-day climate change. It shows that for the last 20 years, the Sun's output has declined, yet temperatures on Earth have risen. It also shows that modern temperatures are not determined by the Sun's effect on cosmic rays, as has been claimed.

BERLIN: The German chancellor, Angela Merkel, Tuesday announced an ambitious plan to reduce greenhouse emissions by up to 40 percent by 2020, an initiative welcomed by environmentalists but harshly criticized by the energy industry, a powerful lobby.

Merkel also ruled out any change to the government's nuclear policy before the next election, scheduled for 2009, that calls for the industry to be phased out in the next 14 years. As part of the emissions-cutting plan, Merkel said she intended to require energy producers to increase efficiency by 3 percent each year and improve conservation.  read more »