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Many plastics that used BPA have now replaced it with substitutes like BPS, a related molecule that may have just as many health issues. skhunda/Shutterstock.com

Study shows BPA substitutes may cause same health issues as the original

BPA, used widely in plastics and as a liner in food cans, was replaced by a related chemical called BPS. But it seems that this substitute may also harm eggs and sperm and disrupt hormones.
Magnetotactic bacteria owe their special property to the magnetic nanoparticles they contain. Andy Tay

Magnetic bacteria and their unique superpower attract researchers

These single-celled organisms naturally respond to the Earth’s weak magnetic field. Scientists are untangling how it all works, looking to future biomedical and other engineering applications.
Assembling sandbags in Virginia Beach, Va., before Hurricane Florence’s arrival. AP Photo/Alex Brandon

How social networks can save lives when disasters strike

Many factors can influence people to evacuate or stay in place when disasters loom. Research using Facebook posts suggests that people with broad social networks are more apt to get moving.
Civic groups like the Boy Scouts are likely under attack by Russian agents – and likely don’t know it. Joseph Sohm/Shutterstock.com

Why the Russians might hack the Boy Scouts next

Russia is trying to create social tension in the US to boost its own strength on the world stage. That includes targeting society itself.
Hindu texts from thousands of years ago demonstrate acceptance of a ‘third gender.’ Today, transgender Indians, or hijras, remain visible members of society. AP Photo/Bikas Das

India’s sodomy ban, now ruled illegal, was a British colonial legacy

Before colonialism, India embraced homosexuality and gender fluidity. The Supreme Court’s repeal of a 157-year-old gay sex ban partially reclaims that history, but LGBTQ Indians still face hurdles.
Breast cancer type 1 (BRCA1) is a human tumor suppressor gene, found in all humans. Its protein, also called by the synonym BRCA1, is responsible for repairing DNA. ibreakstock/Shutterstock.com

Gene-editing technique CRISPR identifies dangerous breast cancer mutations

Mutations in BRCA genes are linked to the early onset of breast and ovarian cancers. But the effect of most mutations is unclear. Now new research can distinguish harmless from dangerous mutations.
Death by suicide isn’t always related to depression. Relationship, job and legal problems can give rise to feelings of hopelessness. Six screening questions may help. PHotograhee.eu

6 questions you can ask a loved one to help screen for suicide risk

Olympic cyclist Kelly Catlin died by suicide March 8, 2019, at age 23. A psychiatrist who has treated those at risk for suicide shares a screening tool that may help loved ones assess a person’s risk.