The school district decided to start classes 30 minutes later to help students get more sleep

A bookstore chain announced it would host monthly book swap events for community membersScientists warned that ocean acidification is threatening coral reefs and marine life

A local basketball team won the national championship after a thrilling overtime victoryA study showed that eating nuts daily can improve heart health and reduce cholesterolThe transportation department began repaving a 15-mile stretch of highway to improve safety

A fashion brand released a clothing line made from recycled plastic bottles collected from oceansA hospital opened a new neonatal intensive care unit with state-of-the-art medical equipment

Researchers discovered a new species of frog in the rainforests of Costa Rica

The government offered grants to small businesses that adopt renewable energy solutionsThe government announced a new $300 million fund to support small businesses affected by recent economic changes

Scientists at a top research lab discovered a way to make solar panels 20% more efficient using recycled materialsA major tech firm unveiled a new smart home device that connects all household appliances into one system

Heavy snowfall in the northern states closed highways and canceled over 200 flightsInternational aid groups sent medical supplies and food to a region hit by a severe earthquake

(责任编辑：张家口市)

• ·A wildlife conservation group organized a cleanup of a local river to protect aquatic life
• ·The national hockey league started its new season with a game between two rival teams
• ·A celebrity chef opened a cooking school where students learn to make gourmet meals
• ·Mathematicians solve long-standing problem in algebra
• ·Local police seized over $1.5 million worth of illegal drugs during a raid on a suspected trafficking ring
• ·Researchers found that family game nights improve communication between parents and teens
• ·Research indicates that walking barefoot on grass improves mood
• ·The government started a campaign to encourage citizens to register to vote before the deadline
• ·Scientists developed a way to recycle old batteries into new energy storage devices
• ·Researchers calculated that using energy-efficient light bulbs can save households $50 a year on electricity bills
• ·A restaurant started offering takeout and delivery services that now make up 30% of its sales
• ·A museum opened a space exploration exhibit
• ·A national park closed temporarily due to severe drought conditions that increased the risk of wildfires
• ·The country’s unemployment rate dropped to 3.5 percent the lowest in 20 years
• ·A snowstorm in the northwest dumped two feet of snow closing schools and government offices
• ·A tech company announced a new innovation in artificial intelligence