New research finds some baleen whale species call at such deep frequencies that they're completely undetectable by killer whales, which cannot hear sounds below 100 hertz. These also tend to be the ...

The ice extent in January was down 498,000 square miles compared to the 1981 to 2010 average. That means the Arctic is now ...

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With seamless connectivity, a quick and easy eVisa process, plus curated experiences for every type of traveller, the Saudi ...