Contents

16 August 2019
Vol 365, Issue 6454

About The Cover

Cover image expansion

COVER A portable exosuit that attaches to the waist and thighs reduces the energy required for walking and running by delivering hip extension assistance for the wearer's hip extensor muscles. The exosuit's minimally restrictive design allows the user to move naturally, and it switches seamlessly between the two gaits, paving the way for future applications that require dynamic and adaptive assistance. See pages 636 and 668.
Illustration: V. Altounian/Science; 3D model: Harvard Biodesign Lab