
It all depends on what you mean by discover and who you're talking about.
To those identified by the term Native Americans he did not, how could he discover where they were living?
Dental Studies Give Clues About Christopher Columbus's CrewSource: The Washington Post
The first planned colonial town in the New World was founded in 1494, when about 1,200 of Christopher Columbus's crew members from the 17 ships that made up his second journey to the Americas settled on the north coast of what is now the Dominican Republic .

(This article is a work in progress. It will be completed as time permits, but for Sabbath readers who want a start (given its long length), here goes . . . The final product will be edited, so again consider this a work in progress.)

Igor Yopsvoyomatsky, editor of paranoiaisfact.com answers readers' questions.
Dear Igor, On the advice of Nobel Prize winner Linus Pauling, I began taking eighteen grams of Vitamin C daily twenty years ago.
Armageddon? Church retails to the massesSource: msnbc.com
They're still ready for Armageddon at the Church Universal and Triumphant, a religious sect that for almost two decades has kept a bomb shelter stocked for 750 people deep in a forest near Yellowstone National Park.
New study blames Columbus for syphilis spreadSource: Australian Broadcasting Corporation
US researchers say new genetic evidence supports the theory that Christopher Columbus brought syphilis to Europe from the New World, reviving a centuries-old debate about the origins of the disease.
Christopher Columbus' Real Discovery: SyphilisSource: Wired News
Diseases carried to North America by Spanish explorers killed millions of the continent's original inhabitants, but the trip cut both ways: scientists say Christopher Columbus took syphilis back to Europe.
Christopher Columbus: Hero or Murderer?Source:
The second Monday in October is celebrated across America as Columbus Day. It is a celebration of the man who discovered America. In school, children are taught that Christopher Columbus was a national hero. In actuality, the man was a murderer
Seeking Columbus's Origins, With a SwabSource: The New York Times
DNA analysis may help solve a long-running dispute between those who would claim alternative bragging rights to Christopher Columbus.

They are considered to be the First Americans although they existed long before there was even an America. In fact they roamed North and South America for at least 10 to 20 thousand years before Christopher Columbus stumbled upon the landmass.
Who Really Sailed the Ocean Blue in 1492?Source: Christian Science Monitor
Genovese nobleman or Catalan pirate? Adventurous explorer or greedy tyrant? What if the Italian gentleman who discovered America was in fact a brutal torturer and slave owner? And what if he wasn't even Italian?
Columbus Birth Riddle UnsolvedSource: ansa.it
But hopes of confirming him Italian remain
(ANSA) - Madrid, October 11 - DNA studies have so far been unable to lay to rest claims that Christopher Columbus was not Italian, but researchers are still hoping to settle the point .