SciNews Aug 17, 2015


Bees and their baggage, war in space, scientific weight loss, magnetic copper and Jupiter’s exoplanet cousin.  These are just some of the themes covered in this week’s edition of SciNews in STAOBlog.

SciNews is published every Monday. Stay tuned for more.

7308778_s from 123rfBiology

How Bees Carry Their Baggage?  Discover

Think your airline’s bag fees are burdensome? Try flying after swallowing part of your luggage and strapping the rest to your legs. That’s how bees do it. And depending on how a bumblebee loads herself up with nectar and pollen, her flight back to the hive might be less of a beeline than usual. Read more…

 

Stomach is the way to a woman’s heart, too. Science Daily

Study shows that women’s brains respond more to romantic cues on a full stomach.

Women’s brains respond more to romantic cues on a full stomach than an empty one, new research demonstrates. The study explored brain circuitry in hungry versus satiated states among women who were past-dieters and those who had never dieted. Read more…

 

Can You Lose Weight with Exercise Alone? Scientific American

Don’t stress too much about cutting calories if you want to shed pounds—focus on getting more exercise. That’s the controversial message beverage giant Coca-Cola is backing in its new campaign to curb obesity. Coke is pushing this idea via a new Coke-backed nonprofit called Global Energy Balance Network, The New York Times reported on August 9. Money from Coke, the Times reported, is also financing studies that support the notion that exercise trumps diet. But is there any merit to such a stance? Not much, says Rutgers University–based diet and behavior expert Charlotte Markey. She is the author of an upcoming cover story in Scientific American MIND on this topic, and spoke about the Coke claims with Scientific American on Monday. Read more…

 

Chemistry

13698187_s from 123rf

Number of Atoms in the Universe. About Chemistry

Question: How Many Atoms Are in the Universe? How Do Scientists Estimate This Number?

Scientists estimate there are 1080 atoms in the universe. The number of atoms in the universe is an estimate. It is a calculated value and not just some random, made-up number. Read more…

 

The heat that keeps on giving. Science News for Students

Thousands of power plants around the world burn coal, oil or natural gas. The combustion of these fossil fuels generates heat. That heat is used to make electricity. When burned, fossil fuels also release carbon dioxide (CO2). In the atmosphere, this invisible gas traps heat that otherwise would escape into space, warming the planet. This indirect heating does much more to warm Earth — and that heat persists for a longer time — than the initial burning of the fossil fuel, a new study finds. Read more…

 

Physics

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Scientists Create a Magnetic Version of Copper. Discover

Magnets make much of our gadget-obsessed world go round. But there’s only a limited number of metals that are naturally magnetic, and some of them are quite rare.

But now researchers have successfully made magnets out of two non-magnetic metals, copper and manganese, at room temperature.

The discovery opens the door to a new class of materials that could be useful for microscopic electronics and sensors. Read more…

 

 

Earth and Space Science12693495_s from 123rf

Astronomers discover ‘young Jupiter’ exoplanet. Science Daily

Helps illuminate how solar systems form

One of the best ways to learn how our solar system evolved is to look to younger star systems in the early stages of development. Now, a team of astronomers has discovered a Jupiter-like planet within a young system that could serve as a decoder ring for understanding how planets formed around our sun. The first planet detected by the Gemini Planet Imager is 100 light-years away but shares many of the characteristics of an early Jupiter. Read more…

 

War in Space May Be Closer Than Ever. Scientific American

The world’s most worrisome military flashpoint is arguably not in the Strait of Taiwan, the Korean Peninsula, Iran, Israel, Kashmir or Ukraine. In fact, it cannot be located on any map of Earth, even though it is very easy to find. To see it, just look up into a clear sky, to the no-man’s-land of Earth orbit, where a conflict is unfolding that is an arms race in all but name. Read more…

 

 

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