Why does my mains electric digital clock not keep time with the Greenwich Time Signal? Today it is three seconds slow, yesterday it was exactly right, and over a period of weeks it can vary by as much as twenty seconds either way. I vaguely remember hearing sometime that it depends on the frequency of [...]
Filed under: Alex Hill's Big Answers, Answered Big Questions, David Clarke's Big Answers, Engineering and Technology Big Qs, Neil Shirtcliffe's Big Answers, age 55+ | 6 Comments »
How is caffeine removed from de-caff tea and coffee?
D a chambers from West Yorkshire (Age 55+)
Filed under: Answered Big Questions, Food Big Questions, Martin McCoustra's Big Answers, age 55+ | 1 Comment »
What distance would a fully laden 747 heading west from Heathrow on a clear day have to travel (mileage wise) before reaching 30000 feet
Gayle Edmunds from Gloucestershire (Age 45-54)
Filed under: Mechanics and Transport Big Qs, Unanswered Big Questions, age 45-54 | Leave a Comment »
How do you build a computer? Where can i get a transparent casing?
Tony Phoenix from Kent (Age 5-14)
Filed under: Computing and AI Big Questions, Unanswered Big Questions, age 5-14 | Leave a Comment »
How can science explain how homoeopathy works? (Note: ‘how’ not ‘if’ if works!)
Hazel Morbey from Lancashire (Age 45-54)
Filed under: Andrew Chaytor's Big Answers, Andrew Russell's Big Answers, Answered Big Questions, Howie Firth's Big Answers, Maarten's Big Answers, Medical Big Questions, Rafi Blumenfeld's Big Answers, Roland Jackson's Big Answers, Trevor Day's Big Answers, age 45-54 | 15 Comments »
What is the minimum area of land required per person of the planet for the sustainability of each? I’m thinking in particular in terms of the land needed for production of an individual’s food and energy.
Howard Eyre from South Yorkshire (Age 55+)
Filed under: Sustainable Development Big Questions, Unanswered Big Questions, age 55+ | Leave a Comment »
How many stars are there in the universe?
Sean Bunn from Greater London (Age 5-14)
Danny Barry from Middlesbrough (Aged 5-14)
Y3/4B from Swansea (Age: 5-14)
Filed under: Answered Big Questions, Astronomy Big Questions, age 5-14 | 1 Comment »
Why are some types of plastic recyclable and others not?
Rosemary Phillips from Surrey (Age 55+)
Filed under: Chemistry Big Questions, Environment & Natural World Big Qs, Unanswered Big Questions, age 55+ | Leave a Comment »
Could there be a gene for religiosity?
Jon Salway from West Yorkshire (Age 45-54)
Filed under: Answered Big Questions, Genetics Big Questions, Matthew Trainer's Big Answers, Religion and Science Big Questions, age 45-54 | 2 Comments »
I understand that there may not be a definitive answer to this because of the variables involved but, in general, is it more economic (and therefore environmentally friendly) to leave my central heating on overnight and when I go away for the weekend rather than turning it off and letting the house go cold.
Chris Fuller [...]
Filed under: Alaster McDonach's Big Answers, Answered Big Questions, Economics Big Questions, age 55+ | 1 Comment »
