Paul Andersen shows you how to compare DNA sequences to understand evolutionary relationships. He starts with a brief introduction to cladograms and evolutionary relationships. He shows you how to classify DNA relationships using a...

Dr. Sarah Wallace talks about her instrumental role in sequencing DNA for the very first time in space. DNA sequencing can be used for things in space from monitoring the crew members' health to identifying microbes, and potentially...

Your genome, every human's genome, consists of a unique DNA sequence of A's, T's, C's and G's that tell your cells how to operate. Thanks to technological advances, scientists are now able to know the sequence of letters that makes up an...

Paul Andersen describes the process of DNA fingerprinting and DNA profiling. He explains how variability in STRs can be used to identify individuals. He explains the importance of DNA fingerprinting in forensics and paternity cases.

DNA isn’t the simple, loose double-helix you might see in a biology textbook, so isolating single strands of it can be next to impossible. But with some simple tricks of physics, scientists came up with a special type of tweezers that...

Our DNA stores the information that makes us who we are, but that's not all it can do! There are applications for DNA that go way beyond its use for life, like storing data and folding it into complicated shapes.

Researchers mapped the mammoth family tree by extracting DNA from fossils. Also, scientists found some sessile animals living under Antarctica's ice shelf, and they're really cool.

Biologist Dan Gibson edits and programs DNA, just like coders program a computer. But his "code" creates life, giving scientists the power to convert digital information into biological material like proteins and vaccines. Now he's on to...

Earlier this week, a team of researchers announced that they’d made a discovery about how we inherit mitochondrial DNA from our parents that could change what we know about not only disease inheritance, but human history as a whole.

Producing many identical copies of a DNA sequence, by laboratory processes, such as the polymerase chain reaction.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning...

Paul Andersen explains the major procedures in molecular biology. He starts with a brief description of Taq polymerase extracted from the hot pools of Yellowstone Park. He then uses the analogy of the ransom note to explain each of the...

In a story of scientific discovery, chemical biologist David R. Liu shares a breakthrough: his lab's development of base editors that can rewrite DNA. This crucial step in genome editing takes the promise of CRISPR to the next level: if...

DNA holds enough information to make a person, but can we use it to store large amounts of our data?

A group of South Korean scientists has developed an innovative DNA barcode system that can be sprayed onto consumer products, replacing traditional barcode stickers. This breakthrough technology provides a secure and tamper-proof method...

Mismatch repair (MMR) is a DNA repair mechanism that corrects base-pairing errors and small insertions or deletions that escape proofreading during DNA replication. A protein complex identifies the mismatch, excises a section of the...

From floppy disks to thumb drives, every method of storing data eventually becomes obsolete. What if we could find a way to store all the world's data forever? Bioinformatician Dina Zielinski shares the science behind a solution that's...

There’s more to DNA than just the double helix we know and love: under some conditions this familiar molecule can take on unfamiliar forms, each of which can have a different impact on our health.

Scientists have successfully created synthetic DNA with twice as many base pairs as normal, with potential implications in medicine, data storage, and even understanding how life could evolve elsewhere in the universe.

Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.

Sharing the results of a massive, worldwide study, geneticist Svante Pääbo shows the DNA proof that early humans mated with Neanderthals after we moved out of Africa. (Yes, many of us have Neanderthal DNA.) He also shows how a tiny bone...

How exactly does gender work? It's not just about our chromosomes, says biologist Karissa Sanbonmatsu. In a visionary talk, she shares new discoveries from epigenetics, the emerging study of how DNA activity can permanently change based...

Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in our cells.

Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins.

Geneticist Jennifer Doudna co-invented a groundbreaking new technology for editing genes, called CRISPR-Cas9. The tool allows scientists to make precise edits to DNA strands, which could lead to treatments for genetic diseases ... but...