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 ...

Scientists have uncovered an astonishing new chapter in humpback whale migration: two whales were found to have traveled between breeding grounds in Australia and Brazil, crossing more than 14,000 ...

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, ...