Death Valley shrubs rearrange their interiors to grow in one of the hottest places on Earth

Scientists have finally discovered how a strange desert plant can grow in one of the hottest places on Earth. It turns out that this vigorous plant changes its internal arrangement as the temperature rises. Extreme conditions frequently occur in California’s Death Valley. Temperatures often exceed 120 degrees Fahrenheit (49 degrees Celsius) in the shade during […]

History of Science: Experiments Show Mutations Occur Naturally and Support the Pillar of Darwin’s Theory of Evolution – November 20, 1943

simple facts Milestone: Experiments show that mutations occur spontaneously Date: November 20, 1943 Location: Indiana University in Bloomington and Vanderbilt University in Nashville, Tennessee People: Max Delbrück and Salvador Luria In 1943, physicists and biologists published a paper confirming one of the central pillars of Darwin’s theory of evolution. The paper, by Max Delbrück of […]

Research suggests that human waste is a catalyst for the domestication of urban raccoons

Raccoons living in cities are showing early signs of domestication, a new study has found. Using photos uploaded to the citizen science platform iNaturalist, researchers found that raccoons in urban environments had shorter snouts than those in rural areas. This difference may be one of several characteristics that constitute a “domestication syndrome,” the scientists said […]

US could lose measles-free status within months, experts say

The United States could lose measles-free status as early as January, marking a sustained resurgence of the disease, which was eradicated from the country 25 years ago. Canada was stripped of its measles exclusion status on November 10 after the Pan American Health Organization concluded that recent measles outbreaks in Canada were related and represented […]

Diagnostic dilemma: Woman had her twin brother’s XY chromosomes, but only in her blood

Patient: 35-year-old female living in Brazil Symptoms: A woman presents to the hospital after suffering a miscarriage during her seventh week of pregnancy. Prior to the hospital visit, the woman’s gynecologist decided to test the patient’s chromosomes to see if there was an underlying genetic reason for the miscarriage. The most common karyotype, or chromosomal […]

DNA damage in CTE is similar to that in Alzheimer’s disease

The brain disease chronic traumatic encephalopathy (CTE) is associated with physical trauma to the head, which can cause inflammation and DNA damage that accumulates in brain cells over time, a new study finds. Research suggests that the DNA damage that can ultimately lead to cell dysfunction and death is similar to damage seen in the […]