There are some things you should always check, like the hygiene rating on your local takeaway,

the setting on your razor, and whether the party actually is fancy dress.

The other thing you should check is your Experian credit report, especially if you're looking to borrow money.

It lets you understand what lenders see, so you can increase your chances of getting the best deals.

It's dead easy to check it and completely free.

See it in seconds. Download the Experian app today.

This is a short edition of Science Talk, the podcast of Scientific American, for February 29th, 2016.

I'm Steve Murski.

Dolby Sound in a theater showing Jurassic World?

The engine of a fat boy Harley Davidson.

What it really is is a gorilla, a male gorilla humming in the middle of a meal.

We know from studies on chimpanzees and bonobos that great apes produce certain vocalization

while they're feeding, so-called food-associated calls.

And our study wanted to investigate

whether gorillas do the same. Eva Lueff with the Max Planck Institute in Germany.

Our study focused on food calls of guerrillas in the Republic of Congo in the Cheka Triangle.

There are two habituated guerrilla groups, which means, habituated means that they're used to humans

around them. Tourists come there and researchers can get as close as seven meters to the gorillas.

This allowed us to record quiet vocalizations that the gorillas produce.

So we recorded the food call of two habituated gorilla groups,

and we found that they produced two distinct vocalizations during feeding.

They're termed humming

...