Determine if the academic profile portal 'nauka-polska.pl' is functional. If not, find its successor 'ludzie.nauka.gov.pl' and confirm its functionality by searching for 'nauka'. Report the accessibility status of 'nauka-polska.pl' and whether 'ludzie.nauka.gov.pl' successfully returns search results for 'nauka'.
Navigate to 'https://www.nauka-polska.pl'. Record the outcome (e.g., 404, successful load, error). Navigate to 'https://ludzie.nauka.gov.pl/ln/'. Input 'nauka' into the search field. Click the search button. Observe and describe the search results page to confirm functionality.
State that 'nauka-polska.pl' is inaccessible and returns a '404 Not Found' error. State that 'ludzie.nauka.gov.pl' is accessible and functional. Confirm that searching for 'nauka' on 'ludzie.nauka.gov.pl' successfully displays search results (e.g., by noting a URL change to a profiles page or the presence of search result elements).