science

What is Biodentine used for in dentistry?

Abstract. Biodentine is a calcium-silicate based material that has drawn attention in recent years and has been advocated to be used in various clinical a...

Jan 11, 2026 • 2 READS

science

What is the real color of sky?

As far as wavelengths go, Earth's sky really is a bluish violet. But because of our eyes we see it as pale blue. Is the sky really blue yes or no? Bl...

Jan 11, 2026 • 2 READS

science

Is it illegal to take sand from Hawaii?

And that's a very risky endeavor, as taking sand from any beach in Hawaii is punishable by fines upwards of $100,000. This includes Papakolea Beach, ...

Jan 11, 2026 • 2 READS

science

Do tattoos cost more with color?

Colored tattoos usually cost more than tattoos with only black and grey ink. Colored inks cost more to buy and replace than black, therefore most artists ...

Jan 11, 2026 • 2 READS

science

Did James Cameron build a replica of Titanic?

The release of James Cameron's Titanic in 1997 saw the film become the first to gross more than $1billion worldwide at the box office. Its level of s...

Jan 11, 2026 • 2 READS

science

What color of wallet is lucky for 2022?

Cerulean blue, fiery red, mint green and imperial yellow are the lucky colours for 2022. What is the best color of wallet in 2022? Black is a very popular...

Jan 11, 2026 • 2 READS

science

Do fish eat leeches?

With nowhere to hide, leeches become tasty meals for your fish. Most any fish large enough to eat leeches will eat them, but you may consider adding more ...

Jan 11, 2026 • 2 READS

science

How many English died in ww2?

In WWII there were 384,000 soldiers killed in combat, but a higher civilian death toll (70,000, as opposed to 2,000 in WWI), largely due to German bombing...

Jan 11, 2026 • 2 READS

science

When does smell return after COVID?

Dr. Piccirillo says most of those who suffer the loss of smell, loss of taste or both during COVID-19 infection quickly regain it. But, for those whose se...

Jan 11, 2026 • 2 READS

science

What is the human guide technique?

The Human Guide technique is used when a person who is blind walks with a guide. When guiding a blind person, give a verbal cue ("take my arm") and/or non...

Jan 11, 2026 • 2 READS