70336860 - Escherichia coli bacterium70336857 - Treponema pallidum bacterium70336865 - Yogurt bacterium70336864 - Neisseiria gonorrhoeae bacterium70336861 - Streptococcus pyogenes bacterium13881499 - Tourists walk a boardwalk as steam rises above the vivid colors and deposits of Grand Prismatic Spring.; Yellowstone National Park, Wyoming, United States of America13881497 - Steam rises above the vivid colors and mineral deposits of Grand Prismatic Spring, a geothermal feature in Yellowstone National Park.; Yellowstone National Park, Wyoming, United States of America13881500 - Tourists walk a boardwalk as steam rises above the vivid colors and mineral deposits of Grand Prismatic Spring.; Yellowstone National Park, Wyoming, United States of America13881498 - Steam rises above the vivid colors and mineral deposits of Grand Prismatic Spring, a geothermal feature in Yellowstone National Park.; Yellowstone National Park, Wyoming, United States of America71105210 - Plitvice Lakes National Park is one of the oldest national parks in Southeast Europe and the largest national park in Croatia. In 1979, Plitvice Lakes National Park was added to the UNESCO World Heritage register. The national park was founded in 1949 and70387874 - Dry Valleys, Antarctica The McMurdo Dry Valleys are a row of valleys west of McMurdo Sound, Antarctica, so named because of their extremely low humidity and lack of snow and ice cover Photosynthetic bacteria have been found living in the relatively moist70472747 - Antibiotic drugs being tested to see how resistant they are to bacteria70172572 - Hot spring in the Black Sand Basin. Yellowstone National Park. Teton County. Wyoming. USA.70606186 - Detail of hot spring , United States , United States of America , USA , West Thumb Geyser Basin , Wyoming , Yellowstone Lake , Yellowstone national park70126428 - Yellowstone National Park. USA70475775 - Thermophyllic algae colonies near Grand Prismatic Spring in the Midway Geyser Basin, Yellowstone NP, Wyoming, USA.70475773 - Cyanobacteria and thermophyllic algae encrusting tiny terraces at Grassy Spring, Mammoth Hot Springs, Yellowstone NP, Wyoming, USA.70447078 - Thermophilic algae and bacteria color a runoff stream of Sapphire Pool in Biscuit Basin, Yellowstone National Park70172083 - Colorful mineral precipitates in the Black Sand Geyser Basin in Yellowstone National Park. Wyoming, USA70150472 - Morning Glory Pool. Yellowstone National Park. Wyoming. USA70146557 - Morning Glory Pool. Yellowstone National Park. Wyoming. USA70328991 - Hot spring, West Thumb Geyser Basin, Yellowstone Lake Area, Yellowstone national Park, Wyoming, USA70172084 - Colorful mineral precipitates in the Black Sand Geyser Basin in Yellowstone National Park. Wyoming, USA71138814 - Bright orange rim and green water of a steaming Morning Glory Pool in the Upper Geyser Basin, Yellowstone National Park, Wyoming.70475774 - Thermophyllic algae colonies near Grand Prismatic Spring in the Midway Geyser Basin, Yellowstone NP, Wyoming, USA.70472746 - Antibiotic drugs being tested to see how resistant they are to bacteria70150471 - Morning Glory Pool. Yellowstone National Park. Wyoming. USA70133493 - Aerial of Grand Prismatic Spring. Yellowstone National Park. Wyoming. USA70130727 - Morning Glory Pool. Yellowstone National Park. Wyoming. USA70472745 - Antibiotic drugs being tested to see how resistant they are to bacteria70370493 - Close-up of a woman coughing70509037 - A lab technician using a cotton swab on a Petri dish with a bacteria culture, close-up of hand70509023 - A lab technician using a cotton swab on a Petri dish with a bacteria culture, close-up of hand70509026 - A lab technician holding a Petri dish with a bacteria culture growing in it, close-up of the hand70509032 - Petri dishes holding different stages of bacteria cultures70509021 - Petri dishes holding different stages of bacteria cultures70509030 - Three used Petri dishes and stacks of unused Petri dishes
