![Even if your CBD is pure, some federal agencies and state laws still forbid it — even in places where medical or recreational cannabis is legal. The PBS NewsHour visited the nation's only college course for growing weed -- at the University of Connecticut -- to explore the science and legality behind growing hemp to make CBD. Photo by AAron Ontiveroz/The Denver Post via Getty Images](https://cdn.statically.io/img/d3i6fh83elv35t.cloudfront.net/static/2019/07/cbd-2_GettyImages-525251752-1024x697.jpg)
![Even if your CBD is pure, some federal agencies and state laws still forbid it — even in places where medical or recreational cannabis is legal. The PBS NewsHour visited the nation's only college course for growing weed -- at the University of Connecticut -- to explore the science and legality behind growing hemp to make CBD. Photo by AAron Ontiveroz/The Denver Post via Getty Images](https://cdn.statically.io/img/d3i6fh83elv35t.cloudfront.net/static/2019/07/cbd-2_GettyImages-525251752-1024x697.jpg)
Science Mar 15
![Photo by Natalie Flemming/Getty Images](https://cdn.statically.io/img/d3i6fh83elv35t.cloudfront.net/static/assets/images/placeholder.jpg)
A new book explains how simple inventions, like the New York City pizza oven, allow certain food producers to dominate their global supply chains.
By Nsikan Akpan, Jamie Leventhal
Science Mar 14
![](https://cdn.statically.io/img/d3i6fh83elv35t.cloudfront.net/static/assets/images/placeholder.jpg)
Math can solve your eternal questions of ordering pizza and explain why folding your pizza is always the strongest move.
By Nsikan Akpan, Julia Griffin, Jamie Leventhal
Science Dec 17
![Individuals with cold or flu infections can spread contagious viruses before symptoms begin. Photo by Subbotina Anna/Adobe Stock](https://cdn.statically.io/img/d3i6fh83elv35t.cloudfront.net/static/assets/images/placeholder.jpg)
These pathogens don’t actually last for days or weeks outside the body, but you should still be proactive in protecting yourself from their spread.
By Julia Griffin, Nsikan Akpan
Science Nov 12
![Home owner Will Buckley uses a shovel with dirt to try to stop the flames from from destroying a neighbor's home during the Woolsey Fire in Malibu, California, U.S. November 9, 2018. Photo by REUTERS/Gene Blevins](https://cdn.statically.io/img/d3i6fh83elv35t.cloudfront.net/static/assets/images/placeholder.jpg)
What everyone needs to know about why these fires are spreading so quickly so late in the year, and how to protect your homes and businesses from them.
By Nsikan Akpan
Aug 15
![](https://d3i6fh83elv35t.cloudfront.net/static/2018/08/Sequence-030-768x432.jpg)
By Julia Griffin, Nsikan Akpan
Humanity only has a handful of decades to determine the future of our planet.
Asian elephants are 10 times more endangered than African savanna elephant and facing a new serious threat. Poachers are taking the skin of Asian elephants in Myanmar and turning it into ruby red jewelry.
Jul 27
![](https://d3i6fh83elv35t.cloudfront.net/static/2018/07/cubilegy3-768x447.jpg)
By Nsikan Akpan, Julia Griffin
A new study shows moving to an open office dramatically cuts face-to-face conversations, but architects say not all open offices should be treated equal.
Jun 18
![](https://d3i6fh83elv35t.cloudfront.net/static/2018/06/multimediaFile-2216_crop-768x473.png)
By Nsikan Akpan, Julia Griffin
Kilauea's eruptions have exposed the guts of our planet in ways previously unseen, and along the way, inspired a number of volcanology terms.
May 16
![](https://d3i6fh83elv35t.cloudfront.net/static/2018/05/Yanny-768x432.jpg)
By Julia Griffin, Nsikan Akpan
It's the auditory debate taking the internet by storm. The PBS NewsHour's Nsikan Akpan and Julia Griffin explain how one sound can create two different experiences.
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