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：虹口区)

• ·Weather service issues tornado watch for midwestern states through Friday evening
• ·Scientists found an effective way to clean up oil spills in the ocean
• ·Geologists study impact of melting glaciers on sea level rise in Arctic region
• ·A city added 10 miles of bike paths connecting residential areas to downtown
• ·Online retailer offers free shipping on orders over $50
• ·A popular actress announced her return to the stage after a long break
• ·A best-selling author announced their next book will focus on climate change activism
• ·A restaurant added a kids eat free night on Tuesdays to attract families
• ·Hospital introduces new robotic surgery system to improve precision in orthopedic procedures
• ·A city started a program to help homeless individuals find housing and employment
• ·A fire department hosted a safety workshop that taught 300 residents how to prevent home fires
• ·A farmers market hosted a cooking demonstration featuring local chefs
• ·The national basketball team won a key game to advance to the next round of the tournament
• ·High school students created an app that helps seniors access local healthcare services
• ·Researchers found that a diet high in whole grains can lower the risk of heart disease
• ·A cyclist won the national championship race by a margin of 2 minutes