By analyzing tail length and muscle power, paleontologists have explained the physics behind a mosasaur's deadly ability to ...

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 ...

Scientists confirmed that West Coast transient killer whales actually form two separate groups split between inner and outer coastal habitats. Inner-coast whales hunt smaller prey in shallow, ...

Can you crack Killer Sudoku's mathematical twist? Try our classic expert Sudoku here. The objective of Sudoku is to fill each row, column and sub-grid with exactly one of each number from 1-9. In ...