Time: 02:54Brasil - science - ZIKA - virus - mosquitos - scientists
Time: 04:15CR - science - cloud chamber - radioactivity
Time: 02:05cr - research - laboratory - researcher
Time: 02:10CR - school - chemistry - laboratory - test tubes - sodium explosion
Time: 04:03Germany - animals - animal testing - scientists - laboratories
Time: 05:00CR - Laboratories - Scientists - Test-tubes - Pipettes