two scientists in protective suits and masks working with laptop near sewerage
female scientist pointing on water of sewerage to male colleague with laptop
male scientist in protective mask and suit writing in clipboard while sitting near sewerage
selective focus of male scientist in protective mask and suit writing in clipboard near water
Dangerous trip Inside Ijen volcano crater
male scientist in protective suit pointing on laptop screen to female colleague near river outdoors
Dangerous trip Inside Ijen volcano crater
serious male scientist in protective suit and mask putting sample of soil by tweezers in test flask
female and male scientists in protective suits walking with working suitcase and clipboard in meadow
JAVA, INDONESIA - JANUARY 21, 2016: Extracting sulphur inside Kawah Ijen crater, Indonesia
Bench in front of a Catalyst Paper Industrial Plant
male scientist in protective mask and suit holding fish by tweezers while his colleague examining it
Closeup shot of a medical facemask on the ground among leaves
male scientist in protective suit and latex gloves standing in meadow
View at winter mountains Tatry, Poland
male scientist in protective mask and suit sitting with working suitcase near sewerage
Dangerous trip Inside Ijen volcano crater
Dangerous trip Inside Ijen volcano crater
focused male scientist in protective suit and mask examining fish outdoors
Huangpu River
View on winter mountains Tatry, Poland
male scientist in protective mask and suit examining sample of water in test flask outdoors
Portrait of young african american woman leading strikers
cropped image of male scientist in protective suit walking with working suitcase in meadow
female and male scientists in protective masks and suits working with digital tablet outdoors
male scientist in protective mask and suit writing in clipboard near water outdoors
Wooden sign Avoid wildfires on the path in the forest
male scientist in protective suit and mask taking sample of water in test flask outdoors
Dangerous trip Inside Ijen volcano crater
Industrial Processing Plant and Container Ship passing by on a cloudy day.
