New research has found that different gut health testing companies can provide wildly different results from the same fecal ...

At-home drug tests are urine or saliva tests that can identify if illegal or prescriptions drugs are present in your body. These tests are an alternative to going in person to a laboratory or other ...

Over three days in late March, four Los Angeles Times environment reporters and an editor fanned out across the Eaton and Palisades burn scars to collect 40 soil samples from residential properties: ...

The COVID-19 pandemic brought the term "Polymerase Chain Reaction testing" into the mainstream. The PCR method is a type of ...

A new ultrasonic test method can acquire high-resolution shale data in the lab by using new geometries for sample testing with specialized equipment suited for measuring shale formations at reservoir ...

This article was produced for ProPublica’s Local Reporting Network in partnership with The Denver Gazette. Sign up for Dispatches to get our stories in your inbox every week. Colorado marijuana ...

Representative soil sample testing done in a Los Angeles County Public Health study found a higher percentage of samples with lead levels above health-based screening thresholds taken from parcels ...

If all goes to plan, the Mars Ascent Vehicle will be the first rocket ever to launch on another planet. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

Learn about t-test assumption, including scale, sampling, normality, sample size, and variance equality, for accurate statistical analysis and reliable results.