The helium balloon would then take the cauldron 30 metres (98 feet) into the sky during its ascensions. Thousands watched ...

While balloons are fun, helium is actually used for loads of very ... which was described as a "game-changer". But it does not solve the problem that helium sources are not infinite.

President Emmanuel Macron said on Friday that one of the most popular symbols of last summer's Olympics will be back until 2028.

The helium balloon would then take the cauldron 30 metres (98 feet) into the sky during its ascensions. Thousands watched with awe every night and the balloon was sorely missed when the Games ...