Categories - Science
- Wilkins Introduces Reserpine for the Treatment of High Blood Pressure
- Willadsen Clones Sheep Using a Simple Technique
- Willem Einthoven
- William Bligh
- William Dampier
- William Harvey
- William James
- Willstätter Discovers the Composition of Chlorophyll
- Wolfgang Pauli
- Wolman Begins Investigating Water and Sewage Systems
- The World Conservation Union Is Founded
- World Delegates Discuss Population Control
- World Health Organization Announces Eradication of Smallpox
- World Meteorological Organization Reports Ozone Loss
- World Nations Approve Kyoto Plan for Reducing Harmful Emissions
- The World Wildlife Fund Is Established
- Worldwatch Institute Is Founded
- The World’s First Breeder Reactor Produces Electricity While Generating New Fuel
- The World’s First Nuclear Reactor Is Activated
- World’s Six Billionth Inhabitant Is Born
- The Wright Brothers Launch the First Successful Airplane
- X Rays from a Synchrotron Are First Used in Medical Diagnosis and Treatment
- X-Ray Crystallography Is Developed by the Braggs
- Yukawa Proposes Existence of Mesons
- Zdansky Discovers Peking Man
- Zeppelin Constructs the First Dirigible That Flies
- Ziegler Develops Low-Pressure Process for Making Polyethylene
- Zinsser Develops an Immunization Against Typhus
- Zsigmondy Invents the Ultramicroscope
- Zwicky and Baade Propose Their Theory of Neutron Stars
- Zworykin Develops an Early Type of Television
- “Black Wednesday” Demonstrates Dangers of Smog
- “Cradle-to-Grave” Legislation Covers Hazardous Wastes
