Hurdles Still Remain for Ground Zero Settlement

By MIREYA NAVARRO

At least 95 percent of the workers who sued the city for health damages must accept the deal for it to take effect.

Climate Change Threatens Migratory Birds, Report Says

By JOHN M. BRODER

For the first time, an Interior Department report adds climate change to other factors threatening bird populations.

Talks to Address Trade in Tuna and Ivory

By NEIL MacFARQUHAR

Negotiations on protecting endangered species will open in Qatar with tensions over efforts to ban trade in bluefin tuna and to reopen exports of elephant ivory.

Ground Zero Workers Reach Deal Over Claims

By MIREYA NAVARRO

A settlement of up to $657.5 million has been reached in the cases of thousands of rescue and cleanup workers who sued the city, according to city officials.

Dot Earth Blog

New U.N. Climate Change Group Is All Male

By SINDYA N. BHANOO

A group of women are upset that a new United Nations climate change financing group has 19 members, but no women.

Winter Games Yield Forecasting Insights

By IAN AUSTEN

A system used at the Games is part of a program to improve the accuracy of winter storm forecasting.

Disease Cause Is Pinpointed With Genome

By NICHOLAS WADE

It now appears possible to sequence a patient’s genome at reasonable cost and with sufficient accuracy to be useful.

Panel Will Review U.N. Climate Work

By JOHN M. BRODER

The review aims to help the U.N. climate change panel avoid the kinds of errors that have brought its work into question in recent months, officials said Wednesday.

Rewrite of Physics by Einstein on Display

By ETHAN BRONNER

For the first time, the complete, original manuscript of the theory of relativity, profoundly human and surprisingly moving to examine, has been put on display in Jerusalem.

• Times Topics: Einstein

How Green Is My Mansion?

By FRED A. BERNSTEIN

When the software mogul Mitch Kapor won planning approval for his 10,000-square-foot house in Berkeley, Calif., neighbors were surprised that it will qualify as “green.”

A New Breed of Guard Dog Attacks Bedbugs

By PENELOPE GREEN

Bedbug-sniffing dogs are the new and furry front line in an escalating domestic war.

• Slide Show

• Louis Sorkin, an Entomologist and Bedbug Expert, Answered Readers' Questions »

Climate Goal Is Supported by China and India

By JOHN M. BRODER

The countries are the last two major economic powers to agree with the aims of the nonbinding agreement.

John Thorbjarnarson, a Crocodile and Alligator Expert, Is Dead at 52

By DOUGLAS MARTIN

Mr. Thorbjarnarson was a scientist with wide interests in saving and learning about many species.

Obama Plans Florida Forum to Discuss NASA’s Future

By KENNETH CHANG

The president planned to spell out his vision for the future of American astronauts in space at a conference next month.