1. People of China’s capital Beijing are no stranger to smog. But they use a special device to be informed of the state of the air pollution.
2. NASA’s Dawn spacecraft has finally unraveled the mystery of bright lights on the dwarf planet Ceres. Speculations varied from alien cities to ice volcanoes.
3. After decades of research, US scientists were able to conceive dogs by in vitro fertilization, leading to the birth of seven puppies in July.