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Hello, this is Six Minute English from BBC Learning English.
I'm Neil.
And I'm Sam.
Have you seen my lottery tickets, Sam?
I seem to have lost it somewhere.
This is another one of your get rich, quick schemes, Neil.
People invent all kinds of ways to make a lot of money quickly and with little effort.
Well, if you really want to get rich quick, maybe you should copy technology tycoon Elon Musk.
Recently, he invested $1.5 billion in the cryptocurrency Bitcoin.
Bitcoin has made some people very rich very quickly, but as we'll be hearing in this program,
it's not without its critics.
Creating bitcoins, a process known as mining,
uses huge amounts of electricity and green campaigners are now questioning Bitcoin's impact on global energy use.
But before we find out more, it's time for my quiz question.
What year was Bitcoin first released?
Was it A, 2009?
B, 2015, or C, 2019?
I'll go for B, 2015.