Natasha Vizcarra

All Stories by Natasha Vizcarra

  1. Oceans

    The sea surface covered by seaweed is now as big as South America

    The first global mapping of macroalgae blooms in the ocean, last year, reveals rapid growth and a new record for the area seaweed blankets.

  2. Climate

    As winters warm, athletes must cope with harder snow and tricky ice

    Ice arenas and artificial snow now dominate the winter Olympics. Athletes there — and everywhere — may need to adjust how they train and perform.