It is a sign of how desperate migrants are that, when traditional pathways to the U.S. from Mexico are blocked, they take to the dangerous desert to reach their destinations.

In this week's roundup of science news, Emily Kwong and Rachel Carlson talk about a newly discovered desert flower, tasting lemonade in virtual reality and prehistoric bone tools used by early humans.

and the Desert Research Institute, all in the U.S., has used radiocarbon dating of bone and other artifacts found at various sites across North America to learn more about Indigenous population ...

SHAPIRO: Wow, so there might be a bone age in addition to a Stone Age ... The wooly devil is a new flower to science, found recently in the desert landscape of Big Bend National Park in Texas.