Summer of science: 10 great books and podcasts for the holidays Why are squid eyes so big? What is Caesar's novel? Can Alexander von Humboldt go graphic? How do you talk to alien plants? Recharge with Âé¶¹´«Ã½â€™s picks Culture
HealthStoring sperm in a freezer for a decade hardly affects birth rates Many countries impose time limits on storing frozen sperm, but a sperm bank study has found this may not be necessary as it has little effect on birth rates News