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February 26 – Tim Berners-Lee introduces WorldWideWeb,
the first web browser, and a WYSIWYG HTML editor. -
July – English physicist Philip Candelas and colleagues show that mirror symmetry could be used to solve problems in enumerative geometry.
a relationship between geometric objects called Calabi–Yau manifolds. -
April 21 – First confirmed detection of extrasolar planets with announcement of the discovery of several terrestrial-mass planets orbiting the pulsar PSR B1257+12 by Aleksander Wolszczan and Dale Frail.
a pulsar located 1000 light years from the Sun. -
March 23 – Start of Milwaukee Cryptosporidiosis outbreak.
waterborne disease -
April 22 – Release of version 1.0 of the Mosaic Web browser, devised by Marc Andreessen and Eric Bina in the United States.
the web browser credited with popularizing the World Wide Web. -
Adobe publishes the first version of the PDF format together with version 1.0 of its PDF product line Adobe Acrobat
a file format used to present documents in a manner independent of application software, hardware and operating systems. -
The first gene linked to Alzheimer's disease is discovered. No new genes would be found until 2009.
progressive mental deterioration that can occur in middle or old age, due to generalized degeneration of the brain. It is the most common cause of premature senility. -
December 8 – The first three atoms of Roentgenium are observed by an international team led by Sigurd Hofmann at the GSI in Darmstadt
the chemical element of atomic number 111, a radioactive element produced artificially. -
January 30 – Workers from the National Institutes of Health announce the success of clinical trials testing the first preventative treatment for sickle cell anaemia.
a condition marked by a deficiency of red blood cells or of hemoglobin in the blood, resulting in pallor and weariness -
The genome of Haemophilus influenzae is the first genome of a free living organism to be sequenced.
a bacterium that can cause a severe infection, occurring mostly in infants and children younger than five years of age.
