Biologists hard at work planning Higher Human Unit 2! ? http://pic.twitter.com/YMRbebSviU

— PLHS Biology (@PLBio) November 28, 2015

from @PLBio

Tarantulas evolved blue colour 'at least eight times' https://t.co/O29dpU1aOd

— PLHS Biology (@PLBio) November 28, 2015

from @PLBio

Just a reminder we have a Christmas Card Workshop tmro 3.45-4.30. All welcome. Free event for pupils by pupils. http://pic.twitter.com/cJZ6iuLATh

— PLHS Library (@PLHSLibrary) November 24, 2015

from @PLBio

Carrying out Primate Behaviour studies @RZSS_Education #edinburghzoo http://pic.twitter.com/NqLO1WgNIU

— PLHS Biology (@PLBio) November 24, 2015

from @PLBio

Higher Biologists looking a bit furry around the edges! @RZSS_Education http://pic.twitter.com/C3ICXgGGBD

— PLHS Biology (@PLBio) November 24, 2015

from @PLBio

P.S No Biscuits and Biology this week due to the Higher Trip! Sorry.

— PLHS Biology (@PLBio) November 23, 2015

from @PLBio

Problem Solving club is on today @1.10, bring your lunch.We will be practicing ratios.

— PLHS Biology (@PLBio) November 23, 2015

from @PLBio

Higher Students having a great day at 'A Question of taste' workshop. http://pic.twitter.com/Q55ehmRZ8H

— PLHS Biology (@PLBio) November 19, 2015

from @PLBio

Biscuits and Biology is on Wednesday this week! Come along to get help with revision and homework!

— PLHS Biology (@PLBio) November 16, 2015

from @PLBio

Warming set to breach 1C threshold https://t.co/B2dZhhHO80

— PLHS Biology (@PLBio) November 9, 2015

from @PLBio