A famous singer performed a surprise concert for nurses and doctors at a city hospital

Doctors developed a new inhaler that delivers medication more effectively for asthma patientsThe local theater held a charity performance to raise money for disaster relief

A new study showed that drinking enough water can improve athletic performanceThe national weather service warned of a blizzard approaching the northeastern statesScientists discovered a new species of frog that can change color to match its surroundings

The city started a program to fine people who litter in public parksA major clothing brand announced it will offer free alterations for all customers

Researchers found that playing board games improves cognitive function in the elderly

The government planned to build 5,000 new affordable housing units in urban areasA vineyard started offering guided tours highlighting its sustainable farming practices and wine-making process

A city added 10 miles of new bike lanes to connect residential neighborhoods to downtown businessesA charity raised $200,000 to build a new community center in a low-income neighborhood

A study published in a leading health journal found that spending 30 minutes in green spaces daily lowers stress hormonesA sports store started selling refurbished equipment at 50% off to make sports more accessible to low-income families

(责任编辑：Knowledge Bites)