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nuclear Freeze

During the Cold War, several periods of protest against nuclear weapons took place in the United States. By far the largest protest campaign involved the nuclear freeze movement. This ...

True Seals

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The Encyclopedia of Mammals (3 ed.)

Reference type:
Subject Reference
Current Version:
Science and technology, Life Sciences
13,702 words

...June and may continue into July. Most Baikal seals are solitary. Longevity: males 52 years, females 56. Caspian seal Pusa caspica Found in the landlocked, saline Caspian Sea, sometimes entering rivers. During breeding season, they concentrate at shallow N end of lake, which freezes over. During summer, they move to water in the deeper middle and S portion. Population said to number approximately 500,000–600,000 but concerns about its status persist. head-tail length both sexes around 130–140cm; weight 50–60kg. Form: gray back with lighter gray sides and...