Richard Harris

Science relies on the careful collection and analysis of facts. Science also benefits from human judgment, but that intuition isn't necessarily reliable. A study finds that scientists did a poor job forecasting whether a successful experiment would work on a second try.

That matters, because scientists can waste a lot of time if they read the results from another lab and eagerly chase after bum leads.

Zika is a scary virus because of the terrible birth defects it can cause. Now scientists have a clearer sense of the size of that risk.

The U.S. Centers for Disease Control and Prevention identified 2,549 pregnant women with the Zika virus in Puerto Rico and other U.S. territories between Jan. 1, 2016 and April 25, 2017. The CDC found that 122 of these women — about 5 percent — gave birth to babies with birth defects such as small heads (known as microcephaly).

Doctors can save thousands of lives a year if they act promptly to identify sepsis, an often lethal reaction to infection. Sometimes called blood poisoning, sepsis is the leading cause of death in hospitals.

A 4-year-old regulation in New York state compels doctors and hospitals to follow a certain protocol, involving a big dose of antibiotics and intravenous fluids. It's far from perfect — about a quarter of patients still die from sepsis. But early intervention is helping.

Smell, the thinking goes, is not our strongest sense. Our lowly noses are eclipsed by our ability to see the world around us, hear the sound of music and feel the touch of a caress. Even animals, we're taught, have a far more acute sense of smell than we do.

But one scientist argues the idea of an inferior sense of smell stems from a 19th-century myth.

If you hear rock star Rod Stewart's husky voice in a radio spot imploring you to get your thyroid checked for cancer, don't be seduced.

An industry-backed foundation has been putting out that message, with Stewart as a celebrity spokesman, but it's not based on sound science. No major medical organization recommends mass screening for thyroid cancer.