The next step in making liquid oxygen is cooling it ... While we’ve seen a few attempts to make liquid nitrogen before, this might be the first time we’ve seen anyone make liquid oxygen.

What happens when you put liquid nitrogen under a vacuum? Well, it should evaporate more, get colder, and freeze. Then it breaks up into solid nitrogen snow. No idea what you would do with this ...

It can be a little disheartening when your tomatoes and strawberries don't ripen well. But gardeners have the option to ...

To get the best out of your tomato and strawberry plants this summer, fertiliser is a must. However, gardeners needn't rely on shop-bought stuff as some natural scrap items can help them do the job.