Pesticides that may cause Bees harm
Pesticides offer bees a risky allure Tests show some pollinators can’t taste certain widely used pesticides that may cause them harm Bees flit from flower to flower dining on nectar. Sometimes that nectar may contain traces of widely used pesticides. Yet the bees are unlikely to know which nectar is tainted. Indeed, they can’t taste these pesticides, a new study finds....
Cell phone use and texting: Studying?
Tests show that teens did not learn as well when they were distracted by text messages. Cell phone use and texting are increasingly common, especially among teens. And that could be a problem. Texting affects learning and performing on tests, a new study finds. On average, students who responded to texts while working got lower scores. This trend held even...
Nanotechnology
Nanotechnology is the engineering of functional systems at the molecular scale. This covers both current work and concepts that are more advanced. In its original sense, 'nanotechnology' refers to the projected ability to construct items from the bottom up, using techniques and tools being developed today to make complete, high performance products. Nanotechnology is the engineering of tiny machines — the...
Changing State: Evaporation
Evaporation occurs when molecules in a liquid gain enough energy that they overcome attractions from other molecules and break away to become a gas. Adding energy increases the rate of evaporation.
What is a Chemical Reaction?
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products. In a chemical reaction, only the...
Yoga is an art, science and philosophy: Pranab Mukherjee
As the government gears up to celebrate the maiden International Yoga Day, President Pranab Mukherjee on Monday said the United Nation's decision in this regard will help popularise yoga globally and enable people to benefit from this "priceless Indian heritage". At an event where he was presented the first copy of 'Yogikasparsh (yogi's touch)', a yoga manual in Braille to...
Studying? Don’t answer that text!
Tests show that teens did not learn as well when they were distracted by text messages. Cell phone use and texting are increasingly common, especially among teens. And that could be a problem. Texting affects learning and performing on tests, a new study finds. On average, students who responded to texts while working got lower scores. This trend held even...
Altered gene leaves people totally painfree
Rare changes in a certain gene can prevent a baby from developing the particular nerves designed to carry signals for pain (example depicted as red dotted line). Affected people will not feel pain, even when injured by bangs, scrapes, burns or more. Naturally occurring changes in a previously unstudied gene can prevent people from experiencing pain. And that’s not good....
Cool Jobs: Green Science
White spruce grow across northern North America, from Alaska to Labrador. As Arctic temperatures rise, spruce are spreading even farther north. This is one in a series on careers in science, technology, engineering and mathematics made possible by support from the Northrop Grumman Foundation. Even if trees cannot walk, they are still on the move. In parts of the Arctic, entire forests...
What’s the buzz? A new mosquito lure
Males of the Aedes aegypti mosquito are attracted to females (one shown) by the buzz their wings make when they fly. New tests by a teen researcher suggests that luring males to an artificial buzz could interfere with mating in the species, thereby reducing numbers of the disease-carrying insects.
