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Video thumbnail: PBS NewsHour Australia's effort to revert koala extinction

PBS NewsHour

Australia's effort to revert koala extinction

Australia's effort to revert koala extinction

Australia's effort to revert koala extinction

Video thumbnail: PBS NewsHour Some key witnesses expected to testify publicly this week

PBS NewsHour

Some key witnesses expected to testify publicly this week

Some key witnesses expected to testify publicly this week

Some key witnesses expected to testify publicly this week

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