The material used for the sample may be glass, polypropylene, polyethylene, or similar polymer products. All of these have excellent insulating properties. If the sample has to be cooled as low as +4 , it is advisable to cool the sample Tray first in a refrigerator before the Tray is ...
Firefighter Mark Pardew took the photo while the koala was drinking from a bottle. “Koalas are 20 friendly to people but this one took David’s hand,” said Mr. Pardew. “She was 21 tired and thirsty.” A friend took t...