Read more about this week's facts: Getting emotional after failure helps you improve next time, study finds (Science Daily) Lightning storms triggered by exhaust from cargo ships (New Scientist) Giraffes didn't evolve long necks simply to reach tree leaves, new study shows (Science Alert) Unalaska is the nation's eagle attack capital. Why? (Alaska Public Media) Watch this fantastic video produced by Great Big Story about the Alaskan town overrun by bald eagles: