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An aerial view of Fenway Park. Photo: Billie Weiss/Boston Red Sox via Getty Images

Fenway Park, which is hosting the first game of the World Series between the Boston Red Sox and the Los Angeles Dodgers tonight, is the second-oldest baseball park in the U.S., behind only Chicago's Wrigley Field. But despite the age of the park, opened in 1912, Fenway ranks among the top 10 energy-efficient baseball stadiums in the U.S.

Why it matters: In 2008, Fenway became the first major league sports arena in the U.S. to install and use thermal solar panels, which replaced gas to heat the stadium's water. Combined with over 20 other initiatives, including LED retrofits, Fenway's efforts have resulted in a 12% reduction in total energy consumption since 2014.  

The background: Major League Baseball (MLB) stadiums can use up to 30 million kilowatt hours in one season, enough to power over 3,000 U.S. homes in a year. The MLB actively encourages the clubs to commit to renewable practices, and was the first professional sports league to enroll all of its members in the Green Sports Alliance, an organization that promotes sustainability in sports. 

What's new: Last year the Red Sox announced that they would offset 100% of Fenway’s electricity use for the next 2 years by purchasing renewable energy certificates (RECs). 

How it works: For every 1 megawatt hour of stadium energy use, Fenway purchases one REC, which represents 1 megawatt hour of renewable energy, such as solar or wind, generated and sent to the power grid. According to the announcement on MLB, 2 years of Fenway's electricity use amounts to displacing the greenhouse gas emissions of over 4,749 vehicles driven for 2 years.

What to watch: Expect more MLB stadiums to follow suit in buying RECs to offset their electricity usage.

Maggie Teliska is a technical specialist at Caldwell Intellectual Property Law, an intellectual property law firm. She is also a member of GLG, a platform connecting businesses with industry experts.

Go deeper

Officials warn 5 key tech sectors will determine whether China overtakes U.S.

Illustration: Aïda Amer/Axios

U.S. intelligence officials responsible for protecting advanced technologies have narrowed their focus to five key sectors: artificial intelligence, quantum computing, biotechnology, semiconductors and autonomous systems.

Why it matters: China and Russia are employing a variety of legal and illegal methods to undermine and overtake U.S. dominance in these critical industries, officials warned in a new paper. Their success will determine "whether America remains the world’s leading superpower or is eclipsed by strategic competitors."

4 hours ago - Health

Pfizer says COVID vaccine over 90% effective in kids

Photo: Michael M. Santiago/Getty Images

Pfizer and BioNTech said their COVID-19 vaccine was more than 90% effective at protecting children between the ages of 5 and 11 from symptomatic infections from the virus, according to a study posted online by the FDA Friday.

Why it matters: Pfizer is seeking an emergency use authorization to vaccinate children — one of the last groups of Americans still largely ineligible to receive a coronavirus vaccine.

Changing the inflation conversation

Illustration: Annelise Capossela/Axios

Inflation looks like it’ll run hot for longer than plenty of smart people thought it would. The conversation over just how much more Americans will have to pay for their stuff has taken on a new intensity, as supply problems show few signs of fading.

Why it matters: The rate of price growth has remained consistently strong in recent months — a time that some thought would bring cooling prices after an initial reopening spike. What goes on with prices will influence the decisions made by Congress, the Biden Administration, and the Federal Reserve.