Blast kills second Iranian physicist

BEIRUT, Lebanon — For the second time in less than a year, an Iranian physicist connected to an international project that includes Israel died in a bomb blast in Tehran, adding to the mystery of what appears to be attacks against Iran's nuclear brain trust.

Majid Shahriari, a nuclear scientist at Tehran's prestigious Shahid Beheshti University, died in a bomb blast Monday morning that injured his wife and driver, Iranian authorities told local news outlets. Another Shahid Beheshti nuclear scientist, Fereydoun Abbasi, and his wife were injured in a separate attack Monday. No one claimed responsibility, Iranian officials said Monday.

A still unsolved Jan. 12 explosion killed physicist Massoud Ali Mohammadi near his home.

—Los Angeles Times

Frustrations show as climate talks resume

CANCUN, Mexico — Frustrated at past failures, climate negotiators began a critical two-week conference Monday with a call from Mexico's president to think beyond their nations' borders and consider all humanity as they bargain over an agreement to fight global warming.

"It would be a tragedy if our inability to see beyond our personal interests, our group or national interests makes us fail," President Felipe Calderon said.

Three years of talks have been stymied by a sometimes acrimonious divide among industrial and developing countries about their responsibilities in fighting climate change and accepting legal limits on how much they can continue to pollute.

—Associated Press