Biblical miracles can be explained with (wildly unlikely, but still technically possible) science.
Manna ‘from heaven’ was less likely some sort of floating baklava and more likely trehalose— a naturally occurring, sweet, edible crystalline carbohydrate that’s created by a whole slew of organisms, such as bacteria, fungi, plants, and a parasitic beetle called Trehala manna (named after the Biblical manna). These beetles are found in Middle East, and their cocoons are highly nutritious, containing both carbs and protein (and a little bit of love!). In fact, this so-called manna is readily available in deserts even today, and is used by the Bedouin as a sweetener.
My favorite part of this article is that despite the delicate subject matter the comments are relatively mild and well-mannered.
And here’s a graphic gallery on the subject: