Foundations
19th Century Experiments Explained How Trees Lift Water
19th Century Experiments Explained How Trees Lift Water
Ben Andrew Henry | Feb 1, 2017
A maple branch and shattered equipment led to the cohesion-tension theory, the counterintuitive claim that water’s movement against gravity involves no action by trees.
The Sled Dogs that Stopped an Outbreak
The Sled Dogs that Stopped an Outbreak
Ben Andrew Henry | Jan 1, 2017
Balto, Togo, and other huskies famously delivered life-saving serum to a remote Alaskan town in 1925—but newspapers didn’t tell the whole story. 
Early 3-D Image Analysis Revealed Surprising Symmetry in the Nuclear Pore
Early 3-D Image Analysis Revealed Surprising Symmetry in the Nuclear Pore
Ben Andrew Henry | Dec 1, 2016
In 1992, advancements in microscopy zoomed in on the precise architecture of the complex, including unforeseen structural repetition in two halves of the ring.
Two-Photon Microscopy’s Historic Influence on Neuroscience
Two-Photon Microscopy’s Historic Influence on Neuroscience
Alison F. Takemura | Nov 1, 2016
In the 1990s, the development of this gentler and more precise microscopy method improved scientists’ ability to probe neurons’ activity and anatomy.
Science History: The First Transgenic <em>Arabidopsis</em>
Science History: The First Transgenic Arabidopsis
Kerry Grens | Oct 1, 2016
Tweaks to a transformation protocol in 1986 cemented the little plant's mighty role in plant genetics research.
ESP on Trial
ESP on Trial
Catherine Offord | Sep 1, 2016
In the 1930s, parapsychologist Joseph Banks Rhine aimed to use scientific methods to confirm the existence of extrasensory perception, but faced criticisms of dubious analyses and irreproducible results.
First Micrographs of Myxobacteria Forming Fruiting Bodies
First Micrographs of Myxobacteria Forming Fruiting Bodies
Tracy Vence | Aug 1, 2016
By ditching traditional agar-based media, two biochemists captured iconic images of Myxococcus in 1982.
First Photo of Intact Giant Squid, 1874
First Photo of Intact Giant Squid, 1874
Catherine Offord | Jul 1, 2016
Moses Harvey’s photograph brought the mysterious creature out of legend and into science.
The Rabies Vaccine Backstory
The Rabies Vaccine Backstory
Catherine Offord | Jun 1, 2016
Louis Pasteur’s trepidation at injecting a child with the first rabies vaccine might have reflected his private knowledge of its lack of prior animal testing.
Picturing Inheritance, 1916
Picturing Inheritance, 1916
Amanda B. Keener | May 1, 2016
This year marks the centennial of Calvin Bridges’s description of nondisjunction as proof that chromosomes are vehicles for inheritance.