The intense heat from lightning causes the surrounding air to rapidly expand and create a sonic wave that you hear as thunder.

Zuck is unemotional. He doesn't get influenced by ego.

Zoomin is a hybrid model. The management and founding team is the one with half.com.

Zoologists study the behavior, physiology, classification and distribution of animals, whether they are living or extinct.

Zoologists may find jobs working for government agencies, non-profit organizations, universities, museums and zoos.