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As students and staff return Monday to Virginia Beach schools, the superintendent encourages them to wear blue to honor shooting victims."For us, blue represents the beach, and the color our first responders wear when they rush toward danger to save lives every day," Natalie Allen, communications officer for Virginia Beach, Virginia schools, told CNN.Blue is also the background of the city flag.On Friday, a gunman killed 12 people at a Virginia Beach municipal building.Aaron Spence, Virginia Beach superintendent, Saturday tweeted the announcement about wearing blue, and it was picked up by neighboring school districts.Newport News Public Schools, Suffolk Public Schools, Hampton City Schools, Chesapeake Public Schools, Portsmouth Public Schools, the York County School Division and Isle of Wight County Schools all stated on social media they will join Virginia Beach schools in wearing blue, according to 927

An outbreak of hepatitis A in Indiana, Nebraska and Wisconsin has been "potentially linked" to blackberries from the Fresh Thyme chain of grocery stores, 165

BOCA RATON, Fla. — The principal of Spanish River Community High School in Boca Raton, Florida, has been reassigned following 138

BEIJING — Chinese authorities are lifting a two-month lockdown of most of coronavirus-hit Hubei province, as domestic cases of the virus continue to subside. People who are cleared will be able to leave the province after midnight Tuesday. China has been using a color-coded system to indicate the health of each citizen: "Red" indicates that a person has been confirmed to have contracted the virus or had a fever at the time they were tested, anyone with close contact with one of those people is considered "yellow." All other citizens are "green."The city of Wuhan, where the outbreak started, will remain locked down until April 8. At that point, any "green" citizens can leave the country.China barred people from leaving or entering Wuhan starting Jan. 23 and expanded it to most of the province in succeeding days. The drastic steps came as a new coronavirus began spreading to the rest of China and overseas during the Lunar New Year when many Chinese people travel. Hubei has seen almost no new infections for more than a week.COVID-19 has killed more than 3,000 people in Hubei province, and more than 67,000 people have contracted the virus. 1165

Canada is warming up faster than the rest of the world, according to a report commissioned by the Canadian Environment and Climate Change Department.The report -- titled "Canada's Changing Climate Report" -- says, on average, Canada's climate has been and will continue to warm at double the rate of global warming. The report also says since 1948, when records became available, Canada's average land temperature increased by 1.7 degrees Celsius (approximately 3 degrees Fahrenheit).Some of the key takeaways from the report included:The observed warming of Canadian temperatures are due to "human influence."There has been more rain than snowfall in Canada since 1948, a trend that looks to continue over the 21st century.Temperature extremes have changed in Canada, meaning extreme warm temperatures are getting hotter and extreme cold is becoming less cold.Extreme hot temperatures will become more frequent and intense.Over the last 30 years, the amount of snow-covered land has decreased in Canada.Flooding is expected to increase in Canada because of sea-level rise.Freshwater shortages in the summer are expected because warmer summers will increase the evaporation of surface water.Michael Mann, a distinguished professor of atmospheric science at Penn State University, told CNN that the report confirms what's already known, "North America, and especially Canada, is seeing even more rapid warming than the planet on the whole, and the impacts are now readily apparent.""In the case of Canada, climate change threatens its very identity, melting its glaciers and ice, shortening its iconic winters by turning snowfall into rain, and flooding its beautiful coastlines," Mann said. "This latest report drives home the fact that climate change is a dire threat now, and if we don't act to dramatically reduce carbon emissions, that threat will only worsen with time."Katharine Hayhoe, director of the Climate Science Center at Texas Tech University, said climate change matters because "it affects us here and now.""Warmer conditions bring summer heat waves, record-breaking floods and wildfires, sea level rise, permafrost thaw, invasive species, and a host of other impacts we're not prepared for," Hayhoe said. "Understanding how climate is changing in the places where we live and what this means for our future is key to ensuring our future is better, not worse than, today."Similar to Canada, US researchers also warned of the affects of climate change.In November, the US Global Change Research Program released a report saying the economy could lose hundreds of billions of dollars -- or, in the worst-case scenario, more than 10% of its gross domestic product (GDP) -- by the end of the century."The global average temperature is much higher and is rising more rapidly than anything modern civilization has experienced, and this warming trend can only be explained by human activities," said David Easterling, director of the Technical Support Unit at the NOAA National Centers for Environmental Information.Without significant reductions in greenhouse emissions, the annual average global temperature could increase 9 degrees Fahrenheit (5 Celsius) or more by the end of this century, compared with preindustrial temperatures, the report says.One of the impacts of climate change in the US, the report says, is that the Midwestern part of the US is predicted to have the largest increase in extreme temperature and will see an additional 2,000 premature deaths per year by 2090.The report also says more people will be exposed to more foodborne and waterborne diseases, particularly children, the elderly, the poor and communities of color. 3670

来源：资阳报