tok.wikipedia.org/wiki/ma#selo_ma

This sentence says Earth’s magnetic field changes on an every-200,000-or-300,000-year cycle. That is not how geomagnetic reversals are described by major scientific sources.

• The U.S. Geological Survey says magnetic reversals are "random with no apparent periodicity".
• USGS also says reversals can happen as often as every 10,000 years or as infrequently as every 50 million years or more.
• USGS states that the last reversal was about 780,000 years ago, which by itself conflicts with the idea of a regular 200,000–300,000-year interval.
• NASA likewise says the intervals between reversals have "fluctuated widely". NASA notes that they average about 300,000 years, but that is an average over long spans of geologic time, not a fixed repeating cycle.

So the problem is not that 200,000–300,000 years has never appeared in scientific discussion; it has. The problem is presenting it as a regular schedule. The evidence shows reversals are irregular, not something that reliably happens every 200,000 or 300,000 years.

This clause gives an exact present-tense population of 8,000,000,000 people on Earth. That number is outdated.

• The United Nations said the world population reached 8 billion on 15 November 2022.
• The UN later reported that the global population had reached 8.2 billion in 2024.

So, as written, the statement is no longer correct: the world population is not exactly 8,000,000,000. If the intent was to give a rough rounded figure, wording such as “around 8 billion” would be more accurate; but the article currently states a specific exact count.