1) The word "elephant" contains three vowels: E, A, and E.

2) The human body contains enough carbon to make over 9,000 pencils.

3) The intensity of cyclones is often measured using the Saffir-Simpson Hurricane Wind Scale, which categorizes them based on their sustained wind speeds.

4) The first commercial mobile phone, the Motorola DynaTAC 8000X, was released in 1983 and weighed nearly 2 pounds.