Rousseff was a Marxist guerrilla who was imprisoned for three years and tortured under Brazil's military dictatorship in the early 1970s.

Canada: Reward in bombings

VANCOUVER, British Columbia — Canada's top oil and gas producer is offering a cash reward of up to 500,000 Canadian dollars ($408,000) for information leading to the arrest of whoever is behind recent bombings of its pipelines.

Four EnCana Corp. sites have been attacked since October, putting a spotlight on local concerns over the industry's rapid growth, particularly of projects involving sour gas that contains the potentially deadly chemical hydrogen sulfide.

Mexico: Sculptures defaced

VILLAHERMOSA — A U.S. woman and two Mexican men were released on bail Tuesday after being charged with allegedly damaging pre-Hispanic Olmec sculptures by dousing them with grape juice, cooking oil and other liquids that stained the massive carved stone heads.

The three were arrested Sunday and face trial for allegedly staining a total of 23 porous stone altars and carvings located in a national park in the Gulf Coast state of Tabasco.

The woman's lawyer said his client's name is Wanda Aguilar. Prosecutors in Tabasco say she is resident of Miami, Fla.

Niger: Envoy kidnapped

NIAMEY — The president of Niger acknowledged Tuesday that a Canadian diplomat who disappeared during a U.N. mission to the West African nation last month was kidnapped by rebels.

His statement marked the first time authorities in Niger have publicly commented on the disappearance of Robert Fowler, the U.N. special envoy to Niger who went missing along with his assistant on Dec. 14.

Norway: Philosopher dies

OSLO — Norwegian philosopher, writer and mountaineer Arne Naess, best known for launching the concept of "deep ecology," has died, his publisher said Tuesday. He was 96.

Naess is credited with creating the deep ecology concept, promoting the idea that Earth as a planet has as much right as its inhabitants, such as humans, to survive and flourish. He cited the 1962 book "Silent Spring" by Rachel Carson as a key inspiration.