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Famous killer whale pregnant again, scientists say

Killer whales filmed in Strangford Lough. Video, 00:00:25Killer whales filmed in Strangford Lough

Killer whale pod spotted off Northumberland coast. Video, 00:00:35Killer whale pod spotted off Northumberland coast

Baby dolphin death causes dismay in Bulgaria

Russia to release whales from 'jail' in far east

'Whale jail' firm fined after outcry

International outcry over Russian 'whale jail'

Orca at SeaWorld Orlando dies suddenly

Famous orca pops up in dolphin hotspot

Pollution threatens the future of Orcas

Pollution threatens future of killer whales. Video, 00:02:17Pollution threatens future of killer whales

Dire outlook for many killer whales

SeaWorld pays $5m to settle fraud claims

Killer whale finally lets dead calf go

Orcas and long-finned whales spotted

Seals crowd rock to escape orcas

Seals hide from circling orcas. Video, 00:00:39Seals hide from circling orcas

Should whales be kept in theme parks?

Thomas Cook to stop trips to parks that keep killer whales. Video, 00:01:55Thomas Cook to stop trips to parks that keep killer whales

Science In Action. Hayabusa 2’s Rovers Land on Asteroid. Audio, 27 minutesScience In Action

Global Concerns. Chemical Waste Protects Linked with Male Infertility. Audio, 13 minutesGlobal Concerns