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The 2011 Great Backyard Bird Count (GBBC) takes place from February 18-21. Each year, bird watchers across the country tally the birds they see in backyards, parks and natural areas. Last year, GBBC participants racked up more than 10 million observations! Counting birds during GBBC helps scientists gain a “snapshot” of North America’s winter bird [...]

Have you ever wondered why potholes appear on roadways during the winter months? Water from melting snow and ice seeps into pavement and the sub-material between pavement and soil below.  When repeated spells of cold weather occur, the water in the pavement refreezes and expands, breaking up the pavement at and below the road surface. When [...]

Have you noticed higher energy bills recently? Fewer daylight hours, more time spent inside and chilly temperatures in many parts of the country mean that energy bills are on the rise at this time of year. Luckily, Energy Star has easy-to-use tools to help you assess and reduce the amount of energy used at home.  [...]

Wintertime in the Chesapeake Bay area means snow and ice. Unfortunately, that also means rock salt and other deicers on our streets and highways. On average, the Chesapeake region gets between 10 and 20 million pounds of road salt applied to its roadways every winter. Much of that salt finds its way into urban streams [...]

January is National Radon Action Month. Radon is produced when uranium in soil, rock and water breaks down and gets into the air. It can be found anywhere in the United States and sneaks into homes and buildings through places like cracks in floors and gaps around pipes. You cannot see, smell or taste radon [...]

When winter storms come through the Chesapeake, they can be spectacular, with howling winds, cold rain and occasionally, heavy snow.  In between, though, the weather is often quiet.  With water temperatures dipping into the 30s, cold-blooded Bay creatures slow way down and usually seek the warmest, most stable conditions they can find.  Most blue crabs, [...]

December 14 marks the beginning of Audubon’s annual Christmas Bird Count. The Count runs through January 5, 2011. The first Christmas Bird Count (CBC) took place on December 25, 1900 – 27 participants counted and identified about 18,500 birds, mostly in the northeastern U.S. Today, CBC volunteers brave snow and chilly temperatures to identify and [...]

Energy use in the United States typically increases during the holiday season. At this time of year, festive holiday lights that decorate neighborhoods across the country can drive up energy demand and home energy bills. Viewer Tip: Hold on to the holiday spirit while saving energy and money this season. Look for holiday lights that have earned the Energy [...]

 The distinctive smell of wood smoke is a sign of the heating season. It may smell good, but wood smoke can impact indoor air quality and your health. Smoke is a mixture of tiny particles and gases produced when wood burns – the fine particles can get into your eyes and lungs, where they may [...]

Unlike pollution from industrial sources and sewage treatment plants, non-point source (NPS) water pollution comes from many diffuse sources. Polluted runoff is caused by rainwater or snowmelt moving over and through the ground. As the runoff moves, it carries and deposits pollutants – such as fertilizers, pesticides and yard wastes like grass clippings and leaves [...]

Fewer daylight hours and cooler temperatures mean that many Americans spend more time inside during the fall and winter months. While up to half of the energy used in a typical home goes towards heating and cooling, other home features like water heaters, appliances and lighting contribute to energy bills. Swapping traditional light bulbs for [...]

A recent study by the U.S. Geological Survey found elevated levels of nitrogen and phosphorus in many streams and groundwater supplies across the country. Elevated levels were most often found in streams near agricultural areas, particularly in the Northeast, Midwest and Northwest, as well as near urban areas. In many cases, concentrations of nitrogen and [...]

Did you know that poor quality soil increases the amount of water needed to irrigate lawns and gardens? Soil improvements, such as adding compost or other similar soil amendments, can reduce your irrigation needs by 20 percent. That’s a reduction of more than 16,000 gallons annually per household in states where irrigation is prevalent, or [...]

Wind plays a major role in bird migration. In the fall, wind circulation patterns around highs and lows impact the movement of migratory birds. The ideal time for flying often occurs the day after a cold front passes – north winds, dropping temperatures, rising air pressure and clearing skies are good migration conditions. Soaring birds like [...]

If you’ve been to the beach, chances are good you’ve been on a barrier island. Barrier islands are among the United States’ most important coastal features. Running more than 3,500 miles along the Atlantic and Gulf Coasts, these islands are invaluable buffers, protecting vulnerable shores and inland areas from violent storms and waves. They also [...]

We often think of fall as a time of diminishing resources. Days get shorter. Storms roll through, bringing rain and strong northwest winds. Temperatures fall. But for animals in and around the Chesapeake, autumn is often a time of plenty. In the Bay, rain, wind and falling temperatures add oxygen to the water.  Cooling makes [...]

Have you found ladybugs in your home this fall? As temperatures drop, the Asian ladybug, Harmonia axyridis becomes an unwelcome houseguest in many homes. Asian ladybugs invade homes at this time of year searching for protected sites to overwinter. The Asian ladybug is relatively new to the United States – in their native home, Asian ladybugs [...]

World Water Monitoring Day (WWMD) – an international education and outreach program to involve the public in monitoring and protecting water resources – takes place on September 18 each year. WWMD volunteers use a simple test kit to measure key water quality indicators in local water bodies, including temperature, acidity (pH), clarity (turbidity) and dissolved [...]

As part of the National Lakes Assessment, the U.S. EPA selected and sampled 116 lakes in the Coastal Plains Region (covering the Mississippi Delta, north along the Ohio River, Florida, eastern Texas and the Atlantic Seaboard to New Jersey) to characterize the condition of more than 7,000 lakes throughout the area. What did researchers find? [...]

Did you know that almost 60 percent of Americans live an area with unhealthy levels of air pollution? Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat [...]