Photo taken on Aug. 27, 2015 shows ripe pumpkins growing from space breeding seeds at a space breeding base in Tianshui, northwest China's Gansu Province. The average weight of such a pumpkin is more than 100 kilograms, and the maximum weight can reach 175 kilograms. Space breeding is a technology using the space to have seeds mutated in order to have better yields. (Photo: Xinhua/Wang Heng)
