Hot weather in the northeast led to an increase in sales of air conditioners and fans

Local schools organized a fundraiser to buy new musical instruments for the school bandThe national opera company performed a new production that received rave reviews from critics

A major airline announced plans to replace its older planes with more fuel-efficient modelsThe government introduced new laws to protect endangered bird species from habitat lossA tech startup launched an app that connects volunteers with local community service projects

Researchers found that spending time in forests lowers blood pressure in adultsA famous singer performed a surprise concert for nurses and doctors at a city hospital

The city’s public library added more e-books and online databases for students and researchers

Local businesses joined a campaign to reduce their carbon footprint by using renewable energyThe national weather service issued a tornado warning for several counties in the southern state

A new study indicated that owning a cat can reduce the risk of stroke in older adultsThe government provided low-interest loans to small businesses recovering from a natural disaster

A tech firm announced it will open a new research lab focused on developing quantum computingResearchers discovered that plants respond to sound waves by growing faster

(责任编辑：潘雪萍)