Christina Beverly runs extension cords run into the house from a portable generator on the porch after winter weather caused electricity blackouts and "boil water" notices in Fort Worth, Texas, U.S. February 20, 2021. Their home has not had power since blackouts began across the state on Sunday, February 14, 2021, according to the residents. REUTERS/Cooper Neill

Christina Beverly runs extension cords into the house from a portable generator on the porch after winter weather caused electricity blackouts and "boil water" notices in Fort Worth, Texas, U.S. February 20, 2021. Their home has not had power since blackouts began across the state on Sunday, February 14, 2021, according to the residents. REUTERS/Cooper Neill

Christina Beverly runs extension cords into the house from a portable generator on the porch after winter weather caused electricity blackouts and "boil water" notices in Fort Worth, Texas, U.S. February 20, 2021. Their home has not had power since blackouts began across the state on Sunday, February 14, 2021, according to the residents. REUTERS/Cooper Neill

A combination picture shows a paralysed mouse (L) and a former-paralysed one in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

Professor Dr. Dietmar Fischer, director of a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, poses in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A woman works with samples in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A scientist holds a paralysed mouse in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A paralysed mouse is removed from its enclosure in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A paralysed mouse is seen in its enclosure in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A woman works with samples in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A mouse which recovered from paralysis is seen in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A mouse which recovered from paralysis is seen in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A mouse which recovered from paralysis is seen in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A paralysed mouse is seen in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A paralysed mouse is seen in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

A paralysed mouse is seen in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler TPX IMAGES OF THE DAY

A paralysed mouse is removed from its enclosure in a lab at Ruhr University, where scientists discovered a way to restore the ability to walk in mice that had been paralysed after a complete spinal cord injury, in Bochum, Germany, January 21, 2021. REUTERS/Leon Kuegeler

Activists wearing "COUNT EVERY VOTE" t-shirts coil electrical cord and dissemble the audio equipment after a street dance party across the street from where votes are being counted, two days after the 2020 U.S. presidential election, in Philadelphia, Pennsylvania, U.S., November 5, 2020. REUTERS/Mark Makela

A man makes igals, tradition Arabic cords worn on heads, at a store in a market in Najaf, Iraq, October 14, 2020. REUTERS/Alaa Al-Marjani

A man makes igals, tradition Arabic cords worn on heads, at a store in a market in Najaf, Iraq, October 14, 2020. REUTERS/Alaa Al-Marjani

Men make igals, tradition Arabic cords worn on heads, at a store in a market in Najaf, Iraq, October 14, 2020. REUTERS/Alaa Al-Marjani

A corded headset attached to a phone is seen at the Tokyo Befrienders call center, a Tokyo's suicide hotline center, during the spread of the coronavirus disease (COVID-19), in Tokyo, Japan May 26, 2020. Picture taken May 26, 2020. REUTERS/Issei Kato

Electricity pylons are seen during sunset in Gavrelle, near Arras, France, April 25, 2020. REUTERS/Pascal Rossignol

Electricity pylons are seen during sunset in Gavrelle, near Arras, France, April 25, 2020. REUTERS/Pascal Rossignol

Electricity pylons are seen during sunset in Gavrelle, near Arras, France, April 25, 2020. REUTERS/Pascal Rossignol

Electricity pylons are seen during sunset in Gavrelle, near Arras, France, April 25, 2020. REUTERS/Pascal Rossignol

Electricity pylons are seen as the spread of the coronavirus disease (COVID-19) continues, in Leicester, Britain, April 25, 2020. REUTERS/Andrew Boyers

An electricity pylon is seen as the spread of the coronavirus disease (COVID-19) continues, in Leicester, Britain, April 25, 2020. REUTERS/Andrew Boyers

The sun sets over Royal Victoria Dock in East London as the spread of the coronavirus disease (COVID-19) continues, London, Britain, April 21, 2020. REUTERS/Steven Watt

A bloom of wild poppies on an Amador County hillside during the coronavirus disease (COVID-19) outbreak in Jackson, California, U.S. April 16, 2020. REUTERS/Kate Munsch

Pople walk along a rail line with downtown Santiago in the background during a fall day, following outbreak of coronavirus disease (COVID-19) in Santiago, Chile March 24, 2020. Picture taken March 24, 2020. REUTERS/Ivan Alvarado

A worker prepares cords for healthcare masks at the Callaghan shoes factory during the coronavirus disease (COVID-19) outbreak in Arnedo, Riojan region, Spain March 23, 2020. Picture taken March 23, 2020. REUTERS/Vincent West

Stuffed animals and clothes hang from a rope at a balcony amid the coronavirus disease (COVID-19) outbreak, in Ronda, southern Spain, April 8, 2020. REUTERS/Jon Nazca

A sign reading "Stay at home" is seen hung from a rope at a balcony amid the coronavirus disease (COVID-19) outbreak, in Ronda, southern Spain, April 8, 2020. REUTERS/Jon Nazca

A worker on an elevated work platform next to a pylon in Gateshead, as the spread of coronavirus disease (COVID-19) continues. Gateshead, Britain, March 25, 2020. REUTERS/Lee Smith

A monkey sit on a wire during sunset in front of Prang Sam Yod temple, following significant impact on tourism after the outbreak of coronavirus disease 2019 (COVID-19) spread, in Lopburi, Thailand, March 18, 2020. Picture taken March 18, 2020. REUTERS/Soe Zeya Tun TPX IMAGES OF THE DAY

A full moon rises near Turkey's Pazarkule border crossing, in Kastanies, Greece March 8, 2020. REUTERS/Florion Goga

Codogno's train station, which was closed by authorities blocking public transport due to a coronavirus outbreak, is seen empty in Codogno, Italy, February 22, 2020. REUTERS/Flavio Lo Scalzo

AnnaLynne McCord attends the 28th Annual Elton John AIDS Foundation Academy Awards Viewing Party in West Hollywood, California, U.S. February 9, 2020. REUTERS/David McNew

AnnaLynne McCord attends the 28th Annual Elton John AIDS Foundation Academy Awards Viewing Party in West Hollywood, California, U.S. February 9, 2020. REUTERS/David McNew

The moon rises as electricians work atop a power pole near the lignite power plant of Neurath of German energy supplier and utility RWE, near Rommerskirchen north-west of Cologne, Germany, February 5, 2020. REUTERS/Wolfgang Rattay

The moon rises as electricians work atop a power pole near the lignite power plant of Neurath of German energy supplier and utility RWE, near Rommerskirchen north-west of Cologne, Germany, February 5, 2020. REUTERS/Wolfgang Rattay

The moon rises as electricians work atop a power pole near the lignite power plant of Neurath of German energy supplier and utility RWE, near Rommerskirchen north-west of Cologne, Germany, February 5, 2020. REUTERS/Wolfgang Rattay

British resident Paul Darwent cuts a cord with British flags inside his bar after the countdown which marks Britain leaving the EU on Brexit day during a symbolic celebration party in Jimera de Libar, southern Spain February 1, 2020. REUTERS/Jon Nazca

A fisherman repairs a fishing net on the dock of the port in Boulogne-sur-Mer, France, January 29, 2020. Picture taken January 29, 2020. EU fishermen will lose the automatic right to fish in British waters once Britain leaves the European Union. REUTERS/Pascal Rossignol

A view shows an abandoned house below high-voltage power lines near multi-storey buildings in Saint Petersburg, Russia January 23, 2020. REUTERS/Anton Vaganov

A U.S. Army 82nd Airborne Division paratrooper who packs parachutes, referred to as a "rigger", carefully wraps the cords of a chute as he practices his skills at Fort Bragg, North Carolina, U.S. January 21, 2020. Picture taken January 21, 2020. REUTERS/Jonathan Drake

Workers of Torrent Power Limited remove kites and thread tangled up in electric power cables after the end of the kite flying season in Ahmedabad, India, January 16, 2020. REUTERS/Amit Dave TPX IMAGES OF THE DAY

Workers of Torrent Power Limited remove kites and thread tangled up in electric power cables after the end of the kite flying season in Ahmedabad, India, January 16, 2020. REUTERS/Amit Dave

Pigeons sit on a wire, with the domes of the Novodevichy monastery in the background, on a snowy day in Moscow, Russia January 11, 2020. REUTERS/Maxim Shemetov TPX IMAGES OF THE DAY

A chapel is seen in the Novodevichy monastery on a snowy day in Moscow, Russia January 11, 2020. REUTERS/Maxim Shemetov

Burnt power lines are seen in Mallacoota, Victoria, Australia January 10, 2020. Picture taken January 10, 2020. REUTERS/Tracey Nearmy

Electricity pylons are seen near Tagelswangen, Switzerland January 10, 2020. REUTERS/Arnd Wiegmann

Electricity pylons are seen near Tagelswangen, Switzerland January 10, 2020. REUTERS/Arnd Wiegmann

High-tension electrical power lines are seen at the Costa Sur power plant after the earthquake in Guayanilla, Puerto Rico, January 9, 2020. REUTERS/Marco Bello

High-tension electrical power lines are seen at the Costa Sur power plant after the earthquake in Guayanilla, Puerto Rico January 9, 2020. REUTERS/Marco Bello

High-tension electrical power equipment are seen at the Costa Sur power plant are seen after the earthquake in Guayanilla, Puerto Rico January 9, 2020. REUTERS/Marco Bello

General view of the ThyssenKrupp Steel Europe plant in Duisburg, Germany, January 7, 2020. REUTERS/Leon Kuegeler

Starlings perch on a power line near Kiryat Gat, southern Israel January 1, 2020. Picture taken January 1, 2020. REUTERS/Amir Cohen

Starlings perch on a power line near Kiryat Gat, southern Israel January 1, 2020. Picture taken January 1, 2020. REUTERS/Amir Cohen