How do boats float?

Answered by Randy Haws, Environmental Scientist, Pro2Serve Whether an object floats or not depends on several things. Solid objects, like wood or apples, float because they have lots of air in them and are lighter than the water around them. Objects like pennies or paper clips sink because the atoms in them are close together…

When getting coffee, the people at Starbucks ask, “Do you want to leave room for sugar and cream?” Do I need to leave space if I just add sugar?

Question answered by Catherine Riddle, PhD, Radiochemist, Idaho National Laboratory The chemistry of coffee is complex to start with so adding sugar, milk or both makes it even more so. There are many systems at work in a cup of coffee including density, inter-molecular spacing, temperature and concentration. Believe it or not, there is a…