Ajax loader
Teens smoking after school
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Richard T. Nowitz / Science Source
Teens smoking after school
Untreated acne
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Biophoto Associates / Science Source
Untreated acne
Human spinal cord neurons and fibers
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Chuck Brown / Science Source
Human spinal cord neurons and fibers
Rural vaccinations in Ethiopia
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John Moss / Science Source
Rural vaccinations in Ethiopia
AIDS Pneumocystis Carinii
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Dr. Cecil H. Fox / Science Source
AIDS Pneumocystis Carinii
Volunteer at nursing home
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Blair Seitz / Science Source
Volunteer at nursing home
Detail of HIV infected macrophage
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Dr. Cecil H. Fox / Science Source
Detail of HIV infected macrophage
Condom in back pocket
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Jim Corwin / Science Source
Condom in back pocket
Teen with therapist
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Richard T. Nowitz / Science Source
Teen with therapist
Sleep disorder study
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Russ Curtis / Science Source
Sleep disorder study
Aerosol oxygen mask on patient
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Aaron Haupt / Science Source
Aerosol oxygen mask on patient
Student examines modified hybrid
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USDA / Science Source
Student examines modified hybrid
Isolating insulin cells for transplantation
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Richard T. Nowitz / Science Source
Isolating insulin cells for transplantation
Mosquito sucking blood from human arm
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Arthur Twomey / Science Source
Mosquito sucking blood from human arm
Geologist reading conductivity tests
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Chris R. Sharp / Science Source
Geologist reading conductivity tests
Space Center/Camp, Alabama
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David R. Frazier / Science Source
Space Center/Camp, Alabama
Craig Venter Pres. of Celera Genomics
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Leonard Lessin / Science Source
Craig Venter Pres. of Celera Genomics
Hashish resin
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RF
Carolyn A. McKeone / Science Source
Hashish resin
Astronomical observatory, CA
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B. W. Marsh / Science Source
Astronomical observatory, CA
Fissure left by earthquake, California
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Will & Deni McIntyre / Science Source
Fissure left by earthquake, California
Tornado, May 16, 1991
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Howard Bluestein / Science Source
Tornado, May 16, 1991
Dr. Ballard speaks of oceanography
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Hank Morgan / Science Source
Dr. Ballard speaks of oceanography
Helicopter on geophysics survey
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Ken M. Johns / Science Source
Helicopter on geophysics survey
Layers of tilted lake sediment
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Ken M. Johns / Science Source
Layers of tilted lake sediment
Genghis II-autonomous microrobot
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Bruce Frisch / Science Source
Genghis II-autonomous microrobot
Building demolished by L.A. earthquake
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Joseph Sohm, ChromoSohm Media Inc. / Science Source
Building demolished by L.A. earthquake
Doctor examining high school aged boy
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Aaron Haupt / Science Source
Doctor examining high school aged boy
Doctor examining high school aged boy
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Aaron Haupt / Science Source
Doctor examining high school aged boy
Neurons in a human brain
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David M. Phillips / Science Source
Neurons in a human brain
Doctor identifying paleomagnetic holes
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Gianni Tortoli / Science Source
Doctor identifying paleomagnetic holes
Dr. Gertrude B. Elion, Nobel Prize Winner
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Will & Deni McIntyre / Science Source
Dr. Gertrude B. Elion, Nobel Prize Winner
Greenhouse of Agrow Inc-lettuce growing
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Hank Morgan / Science Source
Greenhouse of Agrow Inc-lettuce growing
Mt. Werner Veterinary Hospital, CO
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Jim Steinberg / Science Source
Mt. Werner Veterinary Hospital, CO
Retrofitting building for earthquakes
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RF
Fletcher & Baylis / Science Source
Retrofitting building for earthquakes
Carl Sagan on the Set of "Cosmos"
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Cosmos- Kubasik / Science Source
Carl Sagan on the Set of "Cosmos"
Ox spinal cord
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Robert Knauft / Biology Pics / Science Source
Ox spinal cord
X-ray of Fibula fracture
SS2133043
RM
Scott Camazine / Science Source
X-ray of Fibula fracture
Satellite image of the Great Lake region
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NASA / Science Source
Satellite image of the Great Lake region
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