Climate
- Earth
A hundred new nukes?
Here are some issues to contemplate while deciding whether to welcome the nuclear-power renaissance that Sen. Alexander has just proposed.
By Janet Raloff - Earth
Signs of ancient sea ice
New analyses of Arctic seafloor sediments suggest floating ice debuted in the ocean at least 47.5 million years ago.
By Sid Perkins - Earth
Ozone hole trims polar water’s CO2-absorbing power
Simulations also suggest that the dearth of ozone over Antarctica leads to ocean acidification. Simulations also suggest that the dearth of ozone over Antarctica leads to ocean acidification
By Sid Perkins -
- Climate
Carbon dioxide not to blame in ice age mystery
Scientists look at seafloor sediments to determine that a long-term decline in carbon dioxide is not the reason for less frequent ice ages.
By Sid Perkins - Earth
White House releases report on climate change
A new White House report addresses current and projected impacts of climate change across the United States.
By Sid Perkins - Climate
Cultivation changed monsoon in Asia
The loss of forests in India, China during the 1700s led to a decline in monsoon precipitation.
By Sid Perkins - Earth
Federal budget’s new ‘black book’
The administration details a proposed $17 billion in budget savings in a new book.
By Janet Raloff - Health & Medicine
Science budgets look rosy, AAAS finds
The president and Congress have collaborated in targeting substantial increases for federal investments in R&D this year.
By Janet Raloff - Climate
On federal science — and science spending
Things you might have gleaned at the AAAS Forum on Science and Technology Policy.
By Janet Raloff - Earth
A limit for carbon emissions: 1 trillion metric tons
To reduce risks of severe damage from climate change, humans should burn no more than 1 trillion tons of carbon in total, researchers suggest.
By Sid Perkins - Physics
Obama pledges 3 percent of GDP for research
Pledges for big budget increases for research, permanent tax credits for reseach by industry and more were announced today.
By Janet Raloff