For example, 3.00 pm becomes 15:00. To change a 24-hour afternoon, evening or night time to a 12-hour clock time, subtract 12 from the hours. For example, 18:00 becomes 6.00 pm. The time could be ...

The 24 Hours exhibition at Milan design week features 24 weird and wonderful clocks, all by different designers. We look at seven of the most imaginative examples. On show at Riviera, 24 Hours was ...

Parrotfish, for example, secrete a mucous cocoon that ... world beneath the waves and the urgent need to protect it. The 24-hour clock of coral reefs is a testament to nature’s ingenuity and ...