Middle school students designed a solar-powered backpack that charges mobile devices

A local café offered a discount to customers who brought their own reusable cupsEngineers designed a new type of insulation that reduces home energy use by 40%

The postal service introduced a same-day delivery service for packages in major citiesA celebrity chef cooked a special meal for a charity gala that raised $500000 for hunger reliefResearchers calculated that taking public transit instead of driving saves 200 gallons of gas per year

A city started a composting program for residents that turns food waste into garden fertilizerA snowstorm in the northwest dumped two feet of snow closing schools and government offices

A study showed that learning a second language at a young age improves cognitive development

The government passed a law to protect consumers from hidden fees on airline tickets and hotel staysA streaming service added a collection of classic TV shows to its library

Police used facial recognition technology to identify and arrest a fugitive wanted for theftThe weather service warned of dangerous thunderstorms with high winds and lightning

College students won a national competition for their invention that purifies water using solar powerA bank introduced a new checking account with no monthly fees and free ATM access

(责任编辑：蒋进兴)

• ·The national weather service warned of flash floods for areas with poor drainage systems
• ·Scientists warned that ocean acidification is threatening the survival of shell-forming creatures
• ·A museum hosted a lecture by a famous historian about ancient civilizations
• ·A bakery began selling its products at a local farmers market which doubled its weekly revenue
• ·A famous actress announced she will direct her first documentary next year
• ·Scientists developed a new type of battery that can store solar energy for nighttime use
• ·Physicists conduct experiments to test theories about black holes
• ·A basketball team won the national title for the third year in a row after a dramatic overtime victory
• ·The city implemented a new recycling program for electronic waste
• ·A drought in the west led to restrictions on water use for agricultural and residential purposes
• ·A new study indicated that eating breakfast helps maintain a healthy weight
• ·A gym started a rehabilitation program for people recovering from injuries
• ·A restaurant was awarded a best local cuisine prize by a regional food magazine
• ·Research indicates that gratitude journaling reduces stress
• ·A city installed new traffic lights with countdown timers to improve pedestrian safety
• ·A airline added more legroom to its economy class seats