The design, inspired by the shape of owl feathers, aims to solve one of the ... and the schedules that they can operate. Like airplane wings, wind turbine blades are shaped so that air flows ...

Read the following text, and answer questions 1-10 below: [1] In January, a large owl ... feathers to perfectly match the recipient’s, both by species and feather location on the wing, and ...

To submit a sample for the study, hunters should put the wing and tail feathers from each bird into separate paper envelopes — don't mix feathers from different birds together — labeled with ...