Hi. I'm Tim and this is my pronunciation workshop. Here, I'm going to show you how English is really spoken. Come on, let's go inside. You see this? This is my lunch - well, either that, or it's some ...

Hi. I'm Tim and this is my Pronunciation Workshop. Here, I'm going to show you how English is really spoken. Come on, let's go inside. Hey, look at this: a present. All wrapped up in paper. Now, do ...

Bacteria adapt readily to many different nutritional environments by altering gene expression in accordance with the availability of particular nutrients. Each metabolic gene or operon is regulated by ...