People juggle at Bryant Park on the first day of spring in New York, U.S., March 20, 2017. REUTERS/Shannon Stapleton - RTX31W0T

People raise their arms towards the sun to welcome the spring equinox in front of the Pyramid of the Sun in the pre-hispanic city of Teotihuacan, on the outskirts of Mexico City, Mexico, March 20, 2017. REUTERS/Henry Romero - RTX31WRM

A woman stops to buy flowers at a farmers market in Union Square on the first day of spring, in New York City, New York, U.S., March 20, 2017. REUTERS/Mike Segar - RTX31W4S

Hot air balloons float above people waiting to welcome the spring equinox while standing on the Pyramid of the Sun in the pre-hispanic city of Teotihuacan, on the outskirts of Mexico City, Mexico, March 20, 2017. REUTERS/Henry Romero - RTX31WRV

A dancer takes part in a ceremony to welcome the spring equinox in front the Pyramid of the Sun in the pre-hispanic city of Teotihuacan, on the outskirts of Mexico City, Mexico, March 20, 2017. REUTERS/Henry Romero - RTX31WUE

A bee searches for pollen among cherry blossoms on a sunny spring day in Lausanne, Switzerland March 20, 2017. REUTERS/Denis Balibouse - RTX31TCZ

Iraqi Kurdish people carry fire torches up a mountain, as they celebrate Newroz Day, a festival marking their spring and new year, in the town of Akra, Iraq March 20, 2017. REUTERS/Ari Jalal - RTX31W9I

People, wearing traditional costumes, celebrate the national rite Gukanne Vyasny (Spring welcoming) at the Belarussian State Museum of Folk Architecture and Rural Lifestyle near the village of Aziarco in Minsk region, Belarus, March 18, 2017. REUTERS/Vasily Fedosenko - RTX31LZY

On the first day of Spring a women sits in a field of Giant Tecolote Ranunculus flowers at the Flower Fields in Carlsbad, California, U.S., March 20, 2017. REUTERS/Mike Blake - RTX31WQF

A woman walks past soap bubbles in the spring sunshine in St. James's Park in London, Britain, March 15, 2017. REUTERS/Toby Melville TPX IMAGES OF THE DAY - RTX315T9

Image used for illustrative purpose. People climb the Pyramid of the Sun and welcome the spring equinox in the pre-hispanic city of Teotihuacan, on the outskirts of Mexico City, Mexico, March 20, 2017. REUTERS/Henry Romero - RTX31WTB

A woman rides a swing during celebrations for the national rite Gukanne Vyasny (Spring welcoming) at the Belarussian State Museum of Folk Architecture and Rural Lifestyle near the village of Aziarco in Minsk region, Belarus, March 18, 2017. REUTERS/Vasily Fedosenko - RTX31M18

A worker carries picked Giant Tecolote Ranunculus flowers at the Flower Fields in Carlsbad, California, U.S., March 20, 2017. REUTERS/Mike Blake - RTX31WQP