l would like to know more about him and his achievements.

Hiroshi Tsuda.

[It is really difficult to find a biography of this dude]

maybe he is david takayoshi suzuki
his info:::David Takayoshi Suzuki, CC, OBC (born March 24, 1936), is a Canadian science broadcaster & environmental activist. Since the mid-1970s, Suzuki has been known for his TV & radio series & books about nature & the environment. He is best known as host of the popular & long-running CBC Television science magazine, The Nature of Things, seen in syndication in over 40 nations. He is also well known for criticizing governments for their lack of action to protect the environment.

A long time activist to reverse global climate change, Suzuki co-founded the David Suzuki Foundation in 1990, to work ''to find ways for society to live in balance with the natural world that sustains us.'' The Foundation is priorities are: oceans & sustainable fishing, climate change & clean energy, sustainability, & David Suzuki is Nature Challenge. He also served as a director of the Canadian Civil Liberties Association from 1982-1987.