There are many grammatical errors There are many grammatical errors in the book. It doesn't mention a lot of exceptions. So the students have a lot of questions and it's really difficult for the teacher to handle all of them.

Digital membership didnt work; no service Signed up for a paid digital membership: content was good, when I could read it. Every article I tried reading would hit me a paywall popup telling me to subscribe, despite the fact I am was subcribed, logged in, and paying. Sometimes they would go away after waiting a while, sometimes the payway would not go away. Customer service sucks. They don't even respond. Never responded to multiple emails requesting they cancle my membership and stop charging me.. Tired of having my mailbox filled up with stuff I cant read, I clicked unsubscribe. Nat geo site responds 'it may take 10 days' for the system to stop spamming me. 10 days? Hell even junk mail marketing from boner pill salemen will stop immediately when you hit that unsubscribe button.. Nat geo/disney, you suck

National Geographic violates the UN Charter National Geographic violates the UN Charter in its maps. It produces false content that appears to be an attempt to normalize illegal occupation and annexation. In this day and age, it is utterly unacceptable to abuse the influence of a once reputable establishment for spreading false maps. International borders cannot be changed by force, and humanity has proven this in the second world war at an astronomical cost of life loss. Yet, here we are again!

Low quality popscience with no integrity I used to love Nat Geo's magazines and read stacks of old issues almost cover to cover back when I assumed that the content was genuine and scientific. The illusion first shattered when I discovered the "Dog Whisperer" TV show that masqueraded abuse as dog training, and saw that Nat Geo just ignored all the damning critique from highly educated actual behaviour specialists, who implored them to stop the show because it is 1. unscientific, and 2. likely to harm many pet dogs as viewers try to emulate Millan's methods from the popular show. Nat Geo continued the show year after year because the show is popular, and because science, ethics and integrity apparently does not matter... all the sciency gloss is just pretend

For a magazine of such standing National Geographic Digital … For a magazine of such standing, I am sorry to say that their digital version service is atrocious ! I have a paid membership which does not allow me to read any articles which are emailed to me on a daily basis. I have tried every single path, to read the articles, to no avail. A total waste of money!!