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Category Archives: Science
Can caesarean sections increase susceptibility to disease?
Despite efforts to reduce intervention rates during labour, vaginal births without medical intervention are becoming increasingly rare in Australia and overseas: nearly one in three women in Australian now give birth by caesarean; more than half are induced or have … Continue reading
Posted in Biology
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Herschel bows out with study that shows early galaxies ‘cooler’ than predicted
Physicists analysing observations from the Herschel Space Observatory have shown that galaxies in the early Universe were cooler than those we see around us today. The study draws on the star survey work of the HerMES project led by Professor … Continue reading
Posted in Cosmology
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Feast clue to smell of ancient Earth
Tiny 1,900 million-year-old fossils from rocks around Lake Superior, Canada, give the first ever snapshot of organisms eating each other and suggest what the ancient Earth would have smelled like. The fossils, preserved in Gunflint chert, capture ancient microbes in … Continue reading
Posted in Earth Sciences
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Looking Back at an Eclipsed Earth
Here is what the Earth looks like during a solar eclipse. The shadow of the Moon can be seen darkening part of Earth. This shadow moved across the Earth at nearly 2000 kilometers per hour. Only observers near the center … Continue reading
Supernovae and the origin of cosmic rays
In the spring of the year 1006, one thousand and seven years ago this April, observers in China, Egypt, Iraq, Japan, Switzerland (and perhaps North America) reported seeing what might be the brightest stellar event in recorded history: a supernova … Continue reading
Posted in Cosmology
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Fusion and cell death in the development of skeletal muscle
Membrane fusion is a highly regulated event, both inside cells, and between them. From the moment a sperm first fuses with an egg, subsequent developmental events depend upon its proper control. Inside cells, fusion events regulate phagocytosis and vesicle exocytosis, … Continue reading
Posted in Biology
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The Earth’s center is 1,000 degrees hotter than previously thought
Scientists have determined the temperature near the Earth’s centre to be 6000 degrees Celsius, 1000 degrees hotter than in a previous experiment run 20 years ago. These measurements confirm geophysical models that the temperature difference between the solid core and … Continue reading
Posted in Earth Sciences
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Einstein’s gravity theory passes toughest test yet: Bizarre binary star system pushes study of relativity to new limits
A strange stellar pair nearly 7,000 light-years from Earth has provided physicists with a unique cosmic laboratory for studying the nature of gravity. The extremely strong gravity of a massive neutron star in orbit with a companion white dwarf star … Continue reading
Posted in Cosmology
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‘Standard candle’ supernova extraordinarily magnified by gravitational lensing
Schematic illustration of the magnification of PS1-10afx. A massive object between us and the supernova bends light rays much as a glass lens can focus light. As more light rays are directed toward the observer than would be without the … Continue reading
Posted in Cosmology
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How Footsteps Reveal Speed
Determining how fast someone is moving can be as simple as a walk on a beach. For years, researchers relied on a formula that included leg length to determine the speed of humans from fossils. But when study authors tested … Continue reading
Posted in Science
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Embryonic stem cell transplant restores memory
For the first time, human embryonic stem cells have been transformed into nerve cells that helped mice regain the ability to learn and remember. A study at the University of Wisconsin-Madison is the first to show that human stem cells … Continue reading
Posted in Biology, Science
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You don’t need a telescope to do astronomy
A telescope may be essential for close-up views of the Moon and planets, but you can find plenty to look at in the sky without any form of optical aid. You can even take part in observing projects such as … Continue reading
Posted in Cosmology
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Tulip tree’s genome is ‘molecular fossil’
The “extraordinary level of conservation” of genetic data in the tulip tree remains largely unchanged since the dinosaurs, a study suggests. The species’ genomic change is about 2,000 times slower than in humans, making it a “molecular fossil”, a team … Continue reading
Posted in Biology, Evolution
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Natural Fractal Patterns – Romanesco Broccoli
Thanks to Natasha This variant form of cauliflower is the ultimate fractal vegetable. Its pattern is a natural representation of the Fibonacci or golden spiral, a logarithmic spiral where every quarter turn is farther from the origin by a factor … Continue reading
Posted in Earth Sciences
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Making sense of visual pathways
Optic Chiasm. Credit: glaucoma-eye-info.com One way to increase our understanding of bilateral brains, like our own, is to inspect their paired sensory systems. In our visual system, the optic nerves normally combine at a place called the optic chiasm. Here … Continue reading
Posted in Biology
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Water splitting: Plants provide blueprint for cheap hydrogen production
The process by which plants convert energy from the sun’s rays into chemical ‘fuel’ has inspired a new way of generating clean, cheap, renewable hydrogen power which could solve looming problems with the UK’s energy infrastructure. Hydrogen is a significant … Continue reading
Posted in Biology
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Stradivarius trees: Searching for perfect musical wood
Switzerland is home to some of the best violin makers in the world. But how do they know which tree will make a top quality violin? A wander through the forest with a master tree picker gives an idea of … Continue reading
Posted in Arts, Earth Sciences
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