David Powell covers news that affects everyday life in the United States, from policy changes and holidays to travel and the practical things people need to know. His explainers get to the point, then add the context that makes the story make sense.
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Coffee filters, washable markers and a little water are enough for ACS's beginner chromatography activity. Compare the colors that spread from each dot.
Besslly kit CHD-014-2 was recalled because children can access button batteries in its tea lights. Stop using the recalled kit and follow the refund instructions.
Test each alarm and read its label before buying replacement batteries. Sealed-battery and hardwired models have different maintenance instructions.
NASA's October 17 feature explained a stereo view of comet 67P. The source images were taken in 2015, before Rosetta's mission ended.
Planning around food already at home can reduce duplicate purchases. Meal-size freezer portions and clear labels make leftovers easier to use.
Choose nearby cover before the drill begins. The useful exercise includes your desk, mobility needs and the person who may need help afterward.
The National Park Service's downloadable activities give children a way into fossils without making a purchase or promising a souvenir from a park.
NASA's October 11 feature revisited the installation of a detector string. The surrounding ice acts as part of the instrument.
Trails at John Heinz National Wildlife Refuge are open daily from sunrise to sundown. The visitor center keeps a shorter Wednesday-through-Sunday schedule.
NASA's October 10 image feature showed a hemisphere Earthbound observers cannot normally see. Its rough surface also makes an immediate comparison with the near side possible.
The Hudson Valley pumpkin trail is a timed outdoor outing. Match the ticket to the evening you want and leave room for the trip from the station.
JPL supplies a printable template for a paper rocket launched with a drinking straw. Build it, measure the flight and change one feature at a time.