Merry Christmas, everyone!

Christmas is coming and so is the end of 2015. Before that though let's share with the world something great you've also achieved this year, together with your Physics / Chemistry teacher, Nélia Matos. 2015 has been the International Year of Light and you produced a great video about light that can be heard in Portuguese but read in English. Shall we remember it?

Now, yes, it's time to wish you a very merry Christmas, everyone!
Hope you have a beautiful Christmas with love and understanding.
Christmas is a time of sharing, of giving not only presents but also affection. Hope you enjoy this ad (also a PSA) with a famous animal character.

Why Do Leaves Change Colour?

It’s the first day of autumn and the telltale signs are here: unstable weather, rain and wind,  and most importantly, the leaves are changing colors. Ever wonder why some leaves turn red, others yellow and some just turn brown? It's all down to chlorophyll (more like bore-ophyll!) and the glucose stored inside trees that help reveal the reds, yellows and, less excitingly, browns of fall foliage. 
Learn some more Science and Chemistry with this wonderful video: