Edwards identifies James Watson as the discoverer of DNA. However, DNA was discovered in the 1860s. Crick and Watson discovered the double helix structure of DNA. It's very likely that Edwards knew the distinction and may have misspoken or oversimplified for a general audience.
The Scottish actor who played American James Watson pronounced "television" with the secondary British pronunciation of placing the stress accent on the third syllable instead of the first syllable, which is the only practice in North America.