Conversation so far:
Are there any interesting aspects about Julian Huxley's mid-career?
As the 1930s started, Julian Huxley travelled widely and took part in a variety of activities which were partly scientific and partly political.
Where did Julian Huxley travel as the 1930s started?
In 1931 Julian Huxley visited the USSR at the invitation of Intourist

Question: What did he do while in the USSR?
Self-contained rewrite: What did Julian Huxley do while in the USSR in 1931?