6,896 results
6,896 results for: Bears
- Health & Medicine
For babies, walking opens a whole new world
Walking and talking are linked as babies develop, anecdote and data show.
- Animals
Myna birds don’t benefit from brainstorming
Mynas birds are actually a lot worse at problem solving when working in a group.
- Astronomy
Most distant galaxy discovered
Astronomers have observed a galaxy as it existed 700 million years after Big Bang.
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Turning Back Time: Embryonic stem cell rejuvenates skin cell
By fusing an embryonic stem cell with an adult skin cell, researchers have created cells that retain valuable embryonic characteristics but carry the adult cell's genes.
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Bitty Beasts of Burden: Algae can carry cargo
Scientists have devised a way to make single-cell algae bear loads over distances of several centimeters, a tactic that could prove useful in tiny machines.
- Anthropology
Reservoirs of Evolution: Rainy periods linked to human origins in Africa
Three phases of heavy rainfall in eastern Africa between 2.7 million and 900,000 years ago created deep lakes and might have played a critical role in the evolution of human ancestors.
- Health & Medicine
Outwitting TB: Enhanced vaccine protects mice in lab tests
An enhanced vaccine appears to offer better protection against tuberculosis than the current version does, a study in mice suggests.
- Astronomy
Three’s Company: Asteroid 87 Sylvia and her two moons
Astronomers have for the first time discovered an asteroid with two moons, an indication that the rock is highly porous.
- Earth
Multifaceted Mineral: Intense heat, pressure bear new form of silica
By squeezing a mineral sample to pressures higher than those deep within Earth, then zapping it with a laser, scientists have created a crystalline form of silicon dioxide previously unknown on Earth.
- Earth
Under Pressure: High-stress tests show surprising change in a mantle mineral’s behavior
Compressing a common iron-bearing mineral to the pressures found deep within Earth makes the material much stiffer, which might explain why seismic waves travel particularly fast through some zones of rock.
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Monkey Love: Male marmosets think highly of sex
A new brain-imaging study in marmosets suggests that males sexually aroused by the scent of females may be thinking carefully before they mate, opposing the notion that nonhuman male mammals act purely upon a primal urge.
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Tailoring Therapies: Cloned human embryo provides stem cells
Scientists have for the first time carried test-tube cloning of a human embryo to the stage at which it can yield stem cells.
