Skip to main content
Donate

Up Next

John Banville on 'The Black-Eyed Blonde'

John Banville on 'The Black-Eyed Blonde'

Video
5:26
John Banville reads 'The Black-Eyed Blonde'

John Banville reads 'The Black-Eyed Blonde'

Video
1:02
Is Alzheimer’s even more deadly than we thought?

Is Alzheimer’s even more deadly than we thought?

Video
5:04
Online Extra: John Banville on 'The Black-Eyed Blonde'

Online Extra: John Banville on 'The Black-Eyed Blonde'

Video
4:50
Power: Russia faces "political and economic isolation"

Power: Russia faces "political and economic isolation"

Video
7:08
Finding the right words in ‘A Breast Cancer Alphabet’

Finding the right words in ‘A Breast Cancer Alphabet’

Video
5:39
What's the big deal about official economic data?

What's the big deal about official economic data?

Video
7:27
Three promising approaches raise hope for fighting AIDS

Three promising approaches raise hope for fighting AIDS

Video
6:51
Dempsey: U.S. seeks diplomatic resolution to Ukraine crisis

Dempsey: U.S. seeks diplomatic resolution to Ukraine crisis

Video
3:32
Dempsey: Military deserves ‘scrutiny’ on sexual assaults

Dempsey: Military deserves ‘scrutiny’ on sexual assaults

Video
1:39
Dempsey: Military deserves ‘scrutiny’ on sexual assaults

Dempsey: Military deserves ‘scrutiny’ on sexual assaults

Video
1:39
Two books General Dempsey is reading

Two books General Dempsey is reading

Video
1:59
Back to Show
PBS News Hour

The phytoplankton that brought Earth to life

Without the "billion billion billion" Prochlorococcus, a plant-like bacteria in the ocean, Earth would not have the oxygen we breathe today. But the more scientists study about these diverse organisms, the less they know, says Penny Chisholm, an oceanographer at MIT.
Support Provided By
January 9, 2026 - PBS News Hour full episode
56:44
Season 2026 Episode 9
January 9, 2026 - PBS News Hour full episode
January 9, 2026 - PBS News Hour full episode
January 8, 2026 - PBS News Hour full episode
57:46
Season 2026 Episode 8
January 8, 2026 - PBS News Hour full episode
January 8, 2026 - PBS News Hour full episode
January 7, 2026 - PBS News Hour full episode
57:46
Season 2026 Episode 7
January 7, 2026 - PBS News Hour full episode
January 7, 2026 - PBS News Hour full episode
January 6, 2026 - PBS News Hour full episode
56:42
Season 2026 Episode 6
January 6, 2026 - PBS News Hour full episode
January 6, 2026 - PBS News Hour full episode
January 5, 2026 - PBS News Hour full episode
57:46
Season 2026 Episode 5
January 5, 2026 - PBS News Hour full episode
January 5, 2026 - PBS News Hour full episode
January 4, 2026 - PBS News Weekend full episode
26:45
Season 2026 Episode 4
January 4, 2026 - PBS News Weekend full episode
January 4, 2026 - PBS News Weekend full episode
January 3, 2026 - PBS News Weekend full episode
26:45
Season 2026 Episode 3
January 3, 2026 - PBS News Weekend full episode
January 3, 2026 - PBS News Weekend full episode
January 2, 2026 - PBS News Hour full episode
57:46
Season 2026 Episode 2
January 2, 2026 - PBS News Hour full episode
January 2, 2026 - PBS News Hour full episode
January 1, 2026 - PBS News Hour full episode
57:46
Season 2026 Episode 1
January 1, 2026 - PBS News Hour full episode
January 1, 2026 - PBS News Hour full episode
December 31, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 365
December 31, 2025 - PBS News Hour full episode
December 31, 2025 - PBS News Hour full episode
December 30, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 364
December 30, 2025 - PBS News Hour full episode
December 30, 2025 - PBS News Hour full episode
December 29, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 363
December 29, 2025 - PBS News Hour full episode
December 29, 2025 - PBS News Hour full episode
Show more
Active loading indicator