TransCanada sues over Keystone rejection; accuses Obama of exceeding his powers

TransCanada sues over Keystone rejection; accuses Obama of exceeding his powers

HOUSTON (AP) — The Canadian company that proposed the Keystone XL oil pipeline filed a lawsuit over the U.S. government's rejection of the project and announced it plans to file a second legal challenge that will seek more than $15 billion in damages.

TransCanada filed a federal lawsuit Wednesday in Houston alleging President Barack Obama's decision in November to kill the pipeline exceeded his power under the U.S. Constitution.

Explainer: what is a hydrogen bomb? (And why it may not be what North Korea exploded)
North Korea

Explainer: what is a hydrogen bomb? (And why it may not be what North Korea exploded)

Robert J. Downes

Reports that North Korea has launched a fourth nuclear weapons test – backed by convincing seismic data – have caused widespread alarm. North Korean officials announced in advance that the test would involve "a totally different type of nuclear bomb" from those trialed in previous years. Following the test, North Korean state television lauded the first detonation of a "hydrogen bomb" as a "national epoch-making event".

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