Does Sharing the Womb with a Brother Affect Girls?
Does Sharing the Womb with a Brother Affect Girls?
A study links having a male twin with women’s educational, financial, and childbearing decisions. Researchers suspect prenatal exposure to testosterone may play a role.
Does Sharing the Womb with a Brother Affect Girls?
Does Sharing the Womb with a Brother Affect Girls?

A study links having a male twin with women’s educational, financial, and childbearing decisions. Researchers suspect prenatal exposure to testosterone may play a role.

A study links having a male twin with women’s educational, financial, and childbearing decisions. Researchers suspect prenatal exposure to testosterone may play a role.

bugs, neuroscience, ecology
Can Humans Sense Magnetic Fields?
Can Humans Sense Magnetic Fields?
Carolyn Wilke | Mar 19, 2019
A study of people’s brainwaves hints at their unconscious ability to perceive the Earth’s magnetic field.
Rapidly Flashing Lights and Sounds Reduces Alzheimer’s in Mice
Rapidly Flashing Lights and Sounds Reduces Alzheimer’s in Mice
Jef Akst | Mar 15, 2019
Exposing mice to an hour of 40-hertz stimuli every day for a week reduced levels of amyloid-β plaques and tau protein, and improved cognition.
Chemogenetics Method Uses Anti-Smoking Drug to Control Cells
Chemogenetics Method Uses Anti-Smoking Drug to Control Cells
Ruth Williams | Mar 14, 2019
A new set of engineered receptors responds to an FDA-approved drug to provide the most potent chemogenetic toolkit to date.
Image of the Day: Mind Altering
Image of the Day: Mind Altering
Carolyn Wilke | Mar 11, 2019
A study in rats finds that tiny doses of the psychedelic drug DMT may yield positive effects for anxiety and depression, but there could be downsides too.
Sleep Is Critical for the Zebrafish Brain to Repair DNA Damage
Sleep Is Critical for the Zebrafish Brain to Repair DNA Damage
Catherine Offord | Mar 6, 2019
Neurons can only efficiently fix genetic injuries when the animals are asleep.
Brain Surface Area Reveals Overlap in Genes, Intelligence, Evolution
Brain Surface Area Reveals Overlap in Genes, Intelligence, Evolution
Carolyn Wilke | Mar 4, 2019
An analysis of the contours of more than 600 kids’ brains points to links between cerebral surface area and heritability in regions of the brain important in cognition.  
Image of the Day: Imposter Neurons
Image of the Day: Imposter Neurons
Carolyn Wilke | Mar 1, 2019
Researchers have implanted electronics masquerading as neurons in the brains of mice.
Contributors
Contributors
The Scientist Staff | Mar 1, 2019

Meet some of the people featured in the February 2019 issue of The Scientist.

General Anesthesia Causes Telltale Brain Activity Patterns
General Anesthesia Causes Telltale Brain Activity Patterns
Emery N. Brown, Francisco J. Flores | Mar 1, 2019
The drugs lead to widespread, predictable changes in brain waves that can help anesthesiologists personalize anesthesia and develop anesthetic-based treatments.