Mae pŵer yr haul mor gryf, pe gallem ei harneisio'n llawn, gallai golau'r haul sy'n pelydru ar y ddaear am 1 awr fodloni gofynion ynni'r byd am flwyddyn gyfan!
Ym 1990 hedfanodd y Sunseeker I, awyren wedi'i phweru gan yr haul, ar draws America mewn camau gan ddefnyddio dim tanwydd ffosil o gwbl!
You have completed 0/8 of the activities in the Byddwch yn Egniol! programme Complete the final 8 activities now to score 70 points
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